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739 lines
65 KiB
HTML
739 lines
65 KiB
HTML
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="description" content="Learn how and why we build nearly all our components responsively and with base and modifier classes.">
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<meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
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<title>Components · Bootstrap v5.2</title>
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<title>Check</title>
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<div class="offcanvas-lg offcanvas-end flex-grow-1" id="bdNavbar" aria-labelledby="bdNavbarOffcanvasLabel" data-bs-scroll="true">
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<a class="nav-link py-2 px-0 px-lg-2" href="https://icons.getbootstrap.com/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Icons');" target="_blank" rel="noopener">Icons</a>
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<a class="nav-link py-2 px-0 px-lg-2" href="https://themes.getbootstrap.com/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Themes');" target="_blank" rel="noopener">Themes</a>
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<div class="bd-search" id="docsearch" data-bd-docs-version="5.2"></div>
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<small class="d-lg-none ms-2">GitHub</small>
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<li class="nav-item col-6 col-lg-auto">
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<a class="nav-link py-2 px-0 px-lg-2" href="https://twitter.com/getbootstrap" target="_blank" rel="noopener">
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" class="navbar-nav-svg" viewBox="0 0 512 416.32" role="img"><title>Twitter</title><path fill="currentColor" d="M160.83 416.32c193.2 0 298.92-160.22 298.92-298.92 0-4.51 0-9-.2-13.52A214 214 0 0 0 512 49.38a212.93 212.93 0 0 1-60.44 16.6 105.7 105.7 0 0 0 46.3-58.19 209 209 0 0 1-66.79 25.37 105.09 105.09 0 0 0-181.73 71.91 116.12 116.12 0 0 0 2.66 24c-87.28-4.3-164.73-46.3-216.56-109.82A105.48 105.48 0 0 0 68 159.6a106.27 106.27 0 0 1-47.53-13.11v1.43a105.28 105.28 0 0 0 84.21 103.06 105.67 105.67 0 0 1-47.33 1.84 105.06 105.06 0 0 0 98.14 72.94A210.72 210.72 0 0 1 25 370.84a202.17 202.17 0 0 1-25-1.43 298.85 298.85 0 0 0 160.83 46.92"/></svg>
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<small class="d-lg-none ms-2">Twitter</small>
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<a class="nav-link py-2 px-0 px-lg-2" href="https://bootstrap-slack.herokuapp.com/" target="_blank" rel="noopener">
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<small class="d-lg-none ms-2">Slack</small>
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</a>
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<li class="nav-item col-6 col-lg-auto">
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<a class="nav-link py-2 px-0 px-lg-2" href="https://opencollective.com/bootstrap" target="_blank" rel="noopener">
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" fill-rule="evenodd" class="navbar-nav-svg" viewBox="0 0 40 41" role="img"><title>Open Collective</title><path fill-opacity=".4" d="M32.8 21c0 2.4-.8 4.9-2 6.9l5.1 5.1c2.5-3.4 4.1-7.6 4.1-12 0-4.6-1.6-8.8-4-12.2L30.7 14c1.2 2 2 4.3 2 7z"/><path d="M20 33.7a12.8 12.8 0 0 1 0-25.6c2.6 0 5 .7 7 2.1L32 5a20 20 0 1 0 .1 31.9l-5-5.2a13 13 0 0 1-7 2z"/></svg>
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<small class="d-lg-none ms-2">Open Collective</small>
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</a>
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<li class="nav-item py-1 col-12 col-lg-auto">
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<div class="vr d-none d-lg-flex h-100 mx-lg-2 text-white"></div>
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<li class="nav-item dropdown">
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<button class="btn btn-link nav-link py-2 px-0 px-lg-2 dropdown-toggle" id="bd-versions" data-bs-toggle="dropdown" aria-expanded="false" data-bs-display="static">
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<span class="d-lg-none">Bootstrap</span> v5.2
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</button>
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<ul class="dropdown-menu dropdown-menu-end" aria-labelledby="bd-versions">
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<li><h6 class="dropdown-header">v5 releases</h6></li>
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<a class="dropdown-item current" aria-current="true" href="/docs/5.2/customize/components/">
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Latest (5.2.x)
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</a>
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<li>
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<a class="dropdown-item" href="https://getbootstrap.com/docs/5.1/customize/components/">v5.1.3</a>
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<a class="dropdown-item" href="https://getbootstrap.com/docs/5.0/customize/components/">v5.0.2</a>
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<li><h6 class="dropdown-header">Previous releases</h6></li>
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<li><a class="dropdown-item" href="https://getbootstrap.com/docs/4.6/">v4.6.x</a></li>
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<li><a class="dropdown-item" href="https://getbootstrap.com/docs/3.4/">v3.4.1</a></li>
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<li><a class="dropdown-item" href="https://getbootstrap.com/2.3.2/">v2.3.2</a></li>
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<li><a class="dropdown-item" href="/docs/versions/">All versions</a></li>
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</nav>
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<div class="container-xxl bd-gutter mt-3 my-md-4 bd-layout">
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<aside class="bd-sidebar">
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<div class="offcanvas-lg offcanvas-start" id="bdSidebar" aria-labelledby="bdSidebarOffcanvasLabel">
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<div class="offcanvas-header border-bottom">
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<h5 class="offcanvas-title" id="bdSidebarOffcanvasLabel">Browse docs</h5>
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<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close" data-bs-target="#bdSidebar"></button>
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<div class="offcanvas-body">
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<nav class="bd-links w-100" id="bd-docs-nav" aria-label="Docs navigation"><ul class="bd-links-nav list-unstyled mb-0 pb-3 pb-md-2 pe-lg-2">
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<li class="bd-links-group py-2">
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<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
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<svg class="bi me-2" style="color: var(--bs-indigo);" aria-hidden="true"><use xlink:href="#book-half"></use></svg>
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Getting started
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</strong>
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<ul class="list-unstyled fw-normal pb-2 small">
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<li><a href="/docs/5.2/getting-started/introduction/" class="bd-links-link d-inline-block rounded">Introduction</a></li>
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<li><a href="/docs/5.2/getting-started/download/" class="bd-links-link d-inline-block rounded">Download</a></li>
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<li><a href="/docs/5.2/getting-started/contents/" class="bd-links-link d-inline-block rounded">Contents</a></li>
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<li><a href="/docs/5.2/getting-started/browsers-devices/" class="bd-links-link d-inline-block rounded">Browsers & devices</a></li>
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<li><a href="/docs/5.2/getting-started/javascript/" class="bd-links-link d-inline-block rounded">JavaScript</a></li>
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<li><a href="/docs/5.2/getting-started/webpack/" class="bd-links-link d-inline-block rounded">Webpack</a></li>
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<li><a href="/docs/5.2/getting-started/parcel/" class="bd-links-link d-inline-block rounded">Parcel</a></li>
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<li><a href="/docs/5.2/getting-started/accessibility/" class="bd-links-link d-inline-block rounded">Accessibility</a></li>
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<li><a href="/docs/5.2/getting-started/rfs/" class="bd-links-link d-inline-block rounded">RFS</a></li>
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<li><a href="/docs/5.2/getting-started/rtl/" class="bd-links-link d-inline-block rounded">RTL</a></li>
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<li><a href="/docs/5.2/getting-started/contribute/" class="bd-links-link d-inline-block rounded">Contribute</a></li>
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</ul>
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</li>
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<li class="bd-links-group py-2">
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<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
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<svg class="bi me-2" style="color: var(--bs-pink);" aria-hidden="true"><use xlink:href="#palette2"></use></svg>
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Customize
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</strong>
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<ul class="list-unstyled fw-normal pb-2 small">
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<li><a href="/docs/5.2/customize/overview/" class="bd-links-link d-inline-block rounded">Overview</a></li>
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<li><a href="/docs/5.2/customize/sass/" class="bd-links-link d-inline-block rounded">Sass</a></li>
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<li><a href="/docs/5.2/customize/options/" class="bd-links-link d-inline-block rounded">Options</a></li>
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<li><a href="/docs/5.2/customize/color/" class="bd-links-link d-inline-block rounded">Color</a></li>
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<li><a href="/docs/5.2/customize/components/" class="bd-links-link d-inline-block rounded active" aria-current="page">Components</a></li>
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<li><a href="/docs/5.2/customize/css-variables/" class="bd-links-link d-inline-block rounded">CSS variables</a></li>
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<li><a href="/docs/5.2/customize/optimize/" class="bd-links-link d-inline-block rounded">Optimize</a></li>
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</ul>
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</li>
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<li class="bd-links-group py-2">
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<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
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<svg class="bi me-2" style="color: var(--bs-teal);" aria-hidden="true"><use xlink:href="#grid-fill"></use></svg>
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Layout
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</strong>
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<ul class="list-unstyled fw-normal pb-2 small">
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<li><a href="/docs/5.2/layout/breakpoints/" class="bd-links-link d-inline-block rounded">Breakpoints</a></li>
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<li><a href="/docs/5.2/layout/containers/" class="bd-links-link d-inline-block rounded">Containers</a></li>
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<li><a href="/docs/5.2/layout/grid/" class="bd-links-link d-inline-block rounded">Grid</a></li>
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<li><a href="/docs/5.2/layout/columns/" class="bd-links-link d-inline-block rounded">Columns</a></li>
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<li><a href="/docs/5.2/layout/gutters/" class="bd-links-link d-inline-block rounded">Gutters</a></li>
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<li><a href="/docs/5.2/layout/utilities/" class="bd-links-link d-inline-block rounded">Utilities</a></li>
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<li><a href="/docs/5.2/layout/z-index/" class="bd-links-link d-inline-block rounded">Z-index</a></li>
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<li><a href="/docs/5.2/layout/css-grid/" class="bd-links-link d-inline-block rounded">CSS Grid</a></li>
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</ul>
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</li>
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<li class="bd-links-group py-2">
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<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
|
|
<svg class="bi me-2" style="color: var(--bs-gray);" aria-hidden="true"><use xlink:href="#file-earmark-richtext"></use></svg>
|
|
Content
|
|
</strong>
|
|
|
|
<ul class="list-unstyled fw-normal pb-2 small">
|
|
<li><a href="/docs/5.2/content/reboot/" class="bd-links-link d-inline-block rounded">Reboot</a></li>
|
|
<li><a href="/docs/5.2/content/typography/" class="bd-links-link d-inline-block rounded">Typography</a></li>
|
|
<li><a href="/docs/5.2/content/images/" class="bd-links-link d-inline-block rounded">Images</a></li>
|
|
<li><a href="/docs/5.2/content/tables/" class="bd-links-link d-inline-block rounded">Tables</a></li>
|
|
<li><a href="/docs/5.2/content/figures/" class="bd-links-link d-inline-block rounded">Figures</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="bd-links-group py-2">
|
|
<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
|
|
<svg class="bi me-2" style="color: var(--bs-blue);" aria-hidden="true"><use xlink:href="#ui-radios"></use></svg>
|
|
Forms
|
|
</strong>
|
|
|
|
<ul class="list-unstyled fw-normal pb-2 small">
|
|
<li><a href="/docs/5.2/forms/overview/" class="bd-links-link d-inline-block rounded">Overview</a></li>
|
|
<li><a href="/docs/5.2/forms/form-control/" class="bd-links-link d-inline-block rounded">Form control</a></li>
|
|
<li><a href="/docs/5.2/forms/select/" class="bd-links-link d-inline-block rounded">Select</a></li>
|
|
<li><a href="/docs/5.2/forms/checks-radios/" class="bd-links-link d-inline-block rounded">Checks & radios</a></li>
|
|
<li><a href="/docs/5.2/forms/range/" class="bd-links-link d-inline-block rounded">Range</a></li>
|
|
<li><a href="/docs/5.2/forms/input-group/" class="bd-links-link d-inline-block rounded">Input group</a></li>
|
|
<li><a href="/docs/5.2/forms/floating-labels/" class="bd-links-link d-inline-block rounded">Floating labels</a></li>
|
|
<li><a href="/docs/5.2/forms/layout/" class="bd-links-link d-inline-block rounded">Layout</a></li>
|
|
<li><a href="/docs/5.2/forms/validation/" class="bd-links-link d-inline-block rounded">Validation</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="bd-links-group py-2">
|
|
<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
|
|
<svg class="bi me-2" style="color: var(--bs-cyan);" aria-hidden="true"><use xlink:href="#menu-button-wide-fill"></use></svg>
|
|
Components
|
|
</strong>
|
|
|
|
<ul class="list-unstyled fw-normal pb-2 small">
|
|
<li><a href="/docs/5.2/components/accordion/" class="bd-links-link d-inline-block rounded">Accordion</a></li>
|
|
<li><a href="/docs/5.2/components/alerts/" class="bd-links-link d-inline-block rounded">Alerts</a></li>
|
|
<li><a href="/docs/5.2/components/badge/" class="bd-links-link d-inline-block rounded">Badge</a></li>
|
|
<li><a href="/docs/5.2/components/breadcrumb/" class="bd-links-link d-inline-block rounded">Breadcrumb</a></li>
|
|
<li><a href="/docs/5.2/components/buttons/" class="bd-links-link d-inline-block rounded">Buttons</a></li>
|
|
<li><a href="/docs/5.2/components/button-group/" class="bd-links-link d-inline-block rounded">Button group</a></li>
|
|
<li><a href="/docs/5.2/components/card/" class="bd-links-link d-inline-block rounded">Card</a></li>
|
|
<li><a href="/docs/5.2/components/carousel/" class="bd-links-link d-inline-block rounded">Carousel</a></li>
|
|
<li><a href="/docs/5.2/components/close-button/" class="bd-links-link d-inline-block rounded">Close button</a></li>
|
|
<li><a href="/docs/5.2/components/collapse/" class="bd-links-link d-inline-block rounded">Collapse</a></li>
|
|
<li><a href="/docs/5.2/components/dropdowns/" class="bd-links-link d-inline-block rounded">Dropdowns</a></li>
|
|
<li><a href="/docs/5.2/components/list-group/" class="bd-links-link d-inline-block rounded">List group</a></li>
|
|
<li><a href="/docs/5.2/components/modal/" class="bd-links-link d-inline-block rounded">Modal</a></li>
|
|
<li><a href="/docs/5.2/components/navbar/" class="bd-links-link d-inline-block rounded">Navbar</a></li>
|
|
<li><a href="/docs/5.2/components/navs-tabs/" class="bd-links-link d-inline-block rounded">Navs & tabs</a></li>
|
|
<li><a href="/docs/5.2/components/offcanvas/" class="bd-links-link d-inline-block rounded">Offcanvas</a></li>
|
|
<li><a href="/docs/5.2/components/pagination/" class="bd-links-link d-inline-block rounded">Pagination</a></li>
|
|
<li><a href="/docs/5.2/components/placeholders/" class="bd-links-link d-inline-block rounded">Placeholders</a></li>
|
|
<li><a href="/docs/5.2/components/popovers/" class="bd-links-link d-inline-block rounded">Popovers</a></li>
|
|
<li><a href="/docs/5.2/components/progress/" class="bd-links-link d-inline-block rounded">Progress</a></li>
|
|
<li><a href="/docs/5.2/components/scrollspy/" class="bd-links-link d-inline-block rounded">Scrollspy</a></li>
|
|
<li><a href="/docs/5.2/components/spinners/" class="bd-links-link d-inline-block rounded">Spinners</a></li>
|
|
<li><a href="/docs/5.2/components/toasts/" class="bd-links-link d-inline-block rounded">Toasts</a></li>
|
|
<li><a href="/docs/5.2/components/tooltips/" class="bd-links-link d-inline-block rounded">Tooltips</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="bd-links-group py-2">
|
|
<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
|
|
<svg class="bi me-2" style="color: var(--bs-orange);" aria-hidden="true"><use xlink:href="#magic"></use></svg>
|
|
Helpers
|
|
</strong>
|
|
|
|
<ul class="list-unstyled fw-normal pb-2 small">
|
|
<li><a href="/docs/5.2/helpers/clearfix/" class="bd-links-link d-inline-block rounded">Clearfix</a></li>
|
|
<li><a href="/docs/5.2/helpers/color-background/" class="bd-links-link d-inline-block rounded">Color & background</a></li>
|
|
<li><a href="/docs/5.2/helpers/colored-links/" class="bd-links-link d-inline-block rounded">Colored links</a></li>
|
|
<li><a href="/docs/5.2/helpers/ratio/" class="bd-links-link d-inline-block rounded">Ratio</a></li>
|
|
<li><a href="/docs/5.2/helpers/position/" class="bd-links-link d-inline-block rounded">Position</a></li>
|
|
<li><a href="/docs/5.2/helpers/stacks/" class="bd-links-link d-inline-block rounded">Stacks</a></li>
|
|
<li><a href="/docs/5.2/helpers/visually-hidden/" class="bd-links-link d-inline-block rounded">Visually hidden</a></li>
|
|
<li><a href="/docs/5.2/helpers/stretched-link/" class="bd-links-link d-inline-block rounded">Stretched link</a></li>
|
|
<li><a href="/docs/5.2/helpers/text-truncation/" class="bd-links-link d-inline-block rounded">Text truncation</a></li>
|
|
<li><a href="/docs/5.2/helpers/vertical-rule/" class="bd-links-link d-inline-block rounded">Vertical rule</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="bd-links-group py-2">
|
|
<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
|
|
<svg class="bi me-2" style="color: var(--bs-red);" aria-hidden="true"><use xlink:href="#braces-asterisk"></use></svg>
|
|
Utilities
|
|
</strong>
|
|
|
|
<ul class="list-unstyled fw-normal pb-2 small">
|
|
<li><a href="/docs/5.2/utilities/api/" class="bd-links-link d-inline-block rounded">API</a></li>
|
|
<li><a href="/docs/5.2/utilities/background/" class="bd-links-link d-inline-block rounded">Background</a></li>
|
|
<li><a href="/docs/5.2/utilities/borders/" class="bd-links-link d-inline-block rounded">Borders</a></li>
|
|
<li><a href="/docs/5.2/utilities/colors/" class="bd-links-link d-inline-block rounded">Colors</a></li>
|
|
<li><a href="/docs/5.2/utilities/display/" class="bd-links-link d-inline-block rounded">Display</a></li>
|
|
<li><a href="/docs/5.2/utilities/flex/" class="bd-links-link d-inline-block rounded">Flex</a></li>
|
|
<li><a href="/docs/5.2/utilities/float/" class="bd-links-link d-inline-block rounded">Float</a></li>
|
|
<li><a href="/docs/5.2/utilities/interactions/" class="bd-links-link d-inline-block rounded">Interactions</a></li>
|
|
<li><a href="/docs/5.2/utilities/opacity/" class="bd-links-link d-inline-block rounded">Opacity</a></li>
|
|
<li><a href="/docs/5.2/utilities/overflow/" class="bd-links-link d-inline-block rounded">Overflow</a></li>
|
|
<li><a href="/docs/5.2/utilities/position/" class="bd-links-link d-inline-block rounded">Position</a></li>
|
|
<li><a href="/docs/5.2/utilities/shadows/" class="bd-links-link d-inline-block rounded">Shadows</a></li>
|
|
<li><a href="/docs/5.2/utilities/sizing/" class="bd-links-link d-inline-block rounded">Sizing</a></li>
|
|
<li><a href="/docs/5.2/utilities/spacing/" class="bd-links-link d-inline-block rounded">Spacing</a></li>
|
|
<li><a href="/docs/5.2/utilities/text/" class="bd-links-link d-inline-block rounded">Text</a></li>
|
|
<li><a href="/docs/5.2/utilities/vertical-align/" class="bd-links-link d-inline-block rounded">Vertical align</a></li>
|
|
<li><a href="/docs/5.2/utilities/visibility/" class="bd-links-link d-inline-block rounded">Visibility</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="bd-links-group py-2">
|
|
<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
|
|
<svg class="bi me-2" style="color: var(--bs-blue);" aria-hidden="true"><use xlink:href="#tools"></use></svg>
|
|
Extend
|
|
</strong>
|
|
|
|
<ul class="list-unstyled fw-normal pb-2 small">
|
|
<li><a href="/docs/5.2/extend/approach/" class="bd-links-link d-inline-block rounded">Approach</a></li>
|
|
<li><a href="/docs/5.2/extend/icons/" class="bd-links-link d-inline-block rounded">Icons</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="bd-links-group py-2">
|
|
<strong class="bd-links-heading d-flex w-100 align-items-center fw-semibold">
|
|
<svg class="bi me-2" style="color: var(--bs-indigo);" aria-hidden="true"><use xlink:href="#globe2"></use></svg>
|
|
About
|
|
</strong>
|
|
|
|
<ul class="list-unstyled fw-normal pb-2 small">
|
|
<li><a href="/docs/5.2/about/overview/" class="bd-links-link d-inline-block rounded">Overview</a></li>
|
|
<li><a href="/docs/5.2/about/team/" class="bd-links-link d-inline-block rounded">Team</a></li>
|
|
<li><a href="/docs/5.2/about/brand/" class="bd-links-link d-inline-block rounded">Brand</a></li>
|
|
<li><a href="/docs/5.2/about/license/" class="bd-links-link d-inline-block rounded">License</a></li>
|
|
<li><a href="/docs/5.2/about/translations/" class="bd-links-link d-inline-block rounded">Translations</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="bd-links-span-all mt-1 mb-3 mx-4 border-top"></li>
|
|
<li class="bd-links-span-all">
|
|
<a href="/docs/5.2/migration/" class="bd-links-link d-inline-block rounded small ">
|
|
Migration
|
|
</a>
|
|
</li>
|
|
</ul>
|
|
</nav>
|
|
|
|
</div>
|
|
</div>
|
|
</aside>
|
|
|
|
<main class="bd-main order-1">
|
|
<div class="bd-intro pt-2 ps-lg-2">
|
|
<div class="d-md-flex flex-md-row-reverse align-items-center justify-content-between">
|
|
<a class="btn btn-sm btn-bd-light mb-3 mb-md-0 rounded-2" href="https://github.com/twbs/bootstrap/blob/main/site/content/docs/5.2/customize/components.md" title="View and edit this file on GitHub" target="_blank" rel="noopener">
|
|
View on GitHub
|
|
</a>
|
|
<h1 class="bd-title mb-0" id="content">Components</h1>
|
|
</div>
|
|
<p class="bd-lead">Learn how and why we build nearly all our components responsively and with base and modifier classes.</p>
|
|
<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
|
|
|
|
</div>
|
|
|
|
|
|
<div class="bd-toc mt-3 mb-5 my-lg-0 ps-xl-3 mb-lg-5 text-muted">
|
|
<button class="btn btn-link link-dark p-md-0 mb-2 mb-md-0 text-decoration-none bd-toc-toggle d-md-none" type="button" data-bs-toggle="collapse" data-bs-target="#tocContents" aria-expanded="false" aria-controls="tocContents">
|
|
On this page
|
|
<svg class="bi d-md-none ms-2" aria-hidden="true"><use xlink:href="#chevron-expand"></use></svg>
|
|
</button>
|
|
<strong class="d-none d-md-block h6 my-2">On this page</strong>
|
|
<hr class="d-none d-md-block my-2">
|
|
<div class="collapse bd-toc-collapse" id="tocContents">
|
|
<nav id="TableOfContents">
|
|
<ul>
|
|
<li><a href="#base-classes">Base classes</a></li>
|
|
<li><a href="#modifiers">Modifiers</a></li>
|
|
<li><a href="#responsive">Responsive</a></li>
|
|
<li><a href="#creating-your-own">Creating your own</a></li>
|
|
</ul>
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
<div class="bd-content ps-lg-2">
|
|
|
|
|
|
<h2 id="base-classes">Base classes <a class="anchor-link" href="#base-classes" aria-label="Link to this section: Base classes"></a></h2>
|
|
<p>Bootstrap’s components are largely built with a base-modifier nomenclature. We group as many shared properties as possible into a base class, like <code>.btn</code>, and then group individual styles for each variant into modifier classes, like <code>.btn-primary</code> or <code>.btn-success</code>.</p>
|
|
<p>To build our modifier classes, we use Sass’s <code>@each</code> loops to iterate over a Sass map. This is especially helpful for generating variants of a component by our <code>$theme-colors</code> and creating responsive variants for each breakpoint. As you customize these Sass maps and recompile, you’ll automatically see your changes reflected in these loops.</p>
|
|
<p>Check out <a href="/docs/5.2/customize/sass/#maps-and-loops">our Sass maps and loops docs</a> for how to customize these loops and extend Bootstrap’s base-modifier approach to your own code.</p>
|
|
<h2 id="modifiers">Modifiers <a class="anchor-link" href="#modifiers" aria-label="Link to this section: Modifiers"></a></h2>
|
|
<p>Many of Bootstrap’s components are built with a base-modifier class approach. This means the bulk of the styling is contained to a base class (e.g., <code>.btn</code>) while style variations are confined to modifier classes (e.g., <code>.btn-danger</code>). These modifier classes are built from the <code>$theme-colors</code> map to make customizing the number and name of our modifier classes.</p>
|
|
<p>Here are two examples of how we loop over the <code>$theme-colors</code> map to generate modifiers to the <code>.alert</code> and <code>.list-group</code> components.</p>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-scss" data-lang="scss"><span class="line"><span class="cl"><span class="c1">// Generate contextual modifier classes for colorizing the alert.
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1"></span>
|
|
</span></span><span class="line"><span class="cl"><span class="k">@each</span> <span class="nv">$state</span><span class="o">,</span> <span class="nv">$value</span> <span class="ow">in</span> <span class="nv">$theme-colors</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$alert-background</span><span class="o">:</span> <span class="nf">shift-color</span><span class="p">(</span><span class="nv">$value</span><span class="o">,</span> <span class="nv">$alert-bg-scale</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$alert-border</span><span class="o">:</span> <span class="nf">shift-color</span><span class="p">(</span><span class="nv">$value</span><span class="o">,</span> <span class="nv">$alert-border-scale</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$alert-color</span><span class="o">:</span> <span class="nf">shift-color</span><span class="p">(</span><span class="nv">$value</span><span class="o">,</span> <span class="nv">$alert-color-scale</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl">
|
|
</span></span><span class="line"><span class="cl"> <span class="k">@if</span> <span class="p">(</span><span class="nf">contrast-ratio</span><span class="p">(</span><span class="nv">$alert-background</span><span class="o">,</span> <span class="nv">$alert-color</span><span class="p">)</span> <span class="o"><</span> <span class="nv">$min-contrast-ratio</span><span class="p">)</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$alert-color</span><span class="o">:</span> <span class="nf">mix</span><span class="p">(</span><span class="nv">$value</span><span class="o">,</span> <span class="nf">color-contrast</span><span class="p">(</span><span class="nv">$alert-background</span><span class="p">)</span><span class="o">,</span> <span class="nf">abs</span><span class="p">(</span><span class="nv">$alert-color-scale</span><span class="p">));</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nc">.alert-</span><span class="si">#{</span><span class="nv">$state</span><span class="si">}</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="k">@include</span><span class="nd"> alert-variant</span><span class="p">(</span><span class="nv">$alert-background</span><span class="o">,</span> <span class="nv">$alert-border</span><span class="o">,</span> <span class="nv">$alert-color</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl"><span class="p">}</span>
|
|
</span></span></code></pre></div>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-scss" data-lang="scss"><span class="line"><span class="cl"><span class="c1">// List group contextual variants
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1">//
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1">// Add modifier classes to change text and background color on individual items.
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1">// Organizationally, this must come after the `:hover` states.
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1"></span>
|
|
</span></span><span class="line"><span class="cl"><span class="k">@each</span> <span class="nv">$state</span><span class="o">,</span> <span class="nv">$value</span> <span class="ow">in</span> <span class="nv">$theme-colors</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$list-group-variant-bg</span><span class="o">:</span> <span class="nf">shift-color</span><span class="p">(</span><span class="nv">$value</span><span class="o">,</span> <span class="nv">$list-group-item-bg-scale</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$list-group-variant-color</span><span class="o">:</span> <span class="nf">shift-color</span><span class="p">(</span><span class="nv">$value</span><span class="o">,</span> <span class="nv">$list-group-item-color-scale</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="k">@if</span> <span class="p">(</span><span class="nf">contrast-ratio</span><span class="p">(</span><span class="nv">$list-group-variant-bg</span><span class="o">,</span> <span class="nv">$list-group-variant-color</span><span class="p">)</span> <span class="o"><</span> <span class="nv">$min-contrast-ratio</span><span class="p">)</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$list-group-variant-color</span><span class="o">:</span> <span class="nf">mix</span><span class="p">(</span><span class="nv">$value</span><span class="o">,</span> <span class="nf">color-contrast</span><span class="p">(</span><span class="nv">$list-group-variant-bg</span><span class="p">)</span><span class="o">,</span> <span class="nf">abs</span><span class="p">(</span><span class="nv">$list-group-item-color-scale</span><span class="p">));</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl">
|
|
</span></span><span class="line"><span class="cl"> <span class="k">@include</span><span class="nd"> list-group-item-variant</span><span class="p">(</span><span class="nv">$state</span><span class="o">,</span> <span class="nv">$list-group-variant-bg</span><span class="o">,</span> <span class="nv">$list-group-variant-color</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl"><span class="p">}</span>
|
|
</span></span></code></pre></div>
|
|
<h2 id="responsive">Responsive <a class="anchor-link" href="#responsive" aria-label="Link to this section: Responsive"></a></h2>
|
|
<p>These Sass loops aren’t limited to color maps, either. You can also generate responsive variations of your components. Take for example our responsive alignment of the dropdowns where we mix an <code>@each</code> loop for the <code>$grid-breakpoints</code> Sass map with a media query include.</p>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-scss" data-lang="scss"><span class="line"><span class="cl"><span class="c1">// We deliberately hardcode the `bs-` prefix because we check
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1">// this custom property in JS to determine Popper's positioning
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1"></span>
|
|
</span></span><span class="line"><span class="cl"><span class="k">@each</span> <span class="nv">$breakpoint</span> <span class="ow">in</span> <span class="nf">map-keys</span><span class="p">(</span><span class="nv">$grid-breakpoints</span><span class="p">)</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="k">@include</span><span class="nd"> media-breakpoint-up</span><span class="p">(</span><span class="nv">$breakpoint</span><span class="p">)</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="nv">$infix</span><span class="o">:</span> <span class="nf">breakpoint-infix</span><span class="p">(</span><span class="nv">$breakpoint</span><span class="o">,</span> <span class="nv">$grid-breakpoints</span><span class="p">);</span>
|
|
</span></span><span class="line"><span class="cl">
|
|
</span></span><span class="line"><span class="cl"> <span class="nc">.dropdown-menu</span><span class="si">#{</span><span class="nv">$infix</span><span class="si">}</span><span class="nc">-start</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">--bs-position</span><span class="o">:</span> <span class="ni">start</span><span class="p">;</span>
|
|
</span></span><span class="line"><span class="cl">
|
|
</span></span><span class="line"><span class="cl"> <span class="k">&</span><span class="o">[</span><span class="nt">data-bs-popper</span><span class="o">]</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">right</span><span class="o">:</span> <span class="ni">auto</span><span class="p">;</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">left</span><span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl">
|
|
</span></span><span class="line"><span class="cl"> <span class="nc">.dropdown-menu</span><span class="si">#{</span><span class="nv">$infix</span><span class="si">}</span><span class="nc">-end</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">--bs-position</span><span class="o">:</span> <span class="ni">end</span><span class="p">;</span>
|
|
</span></span><span class="line"><span class="cl">
|
|
</span></span><span class="line"><span class="cl"> <span class="k">&</span><span class="o">[</span><span class="nt">data-bs-popper</span><span class="o">]</span> <span class="p">{</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">right</span><span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">left</span><span class="o">:</span> <span class="ni">auto</span><span class="p">;</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="p">}</span>
|
|
</span></span><span class="line"><span class="cl"><span class="p">}</span>
|
|
</span></span></code></pre></div>
|
|
<p>Should you modify your <code>$grid-breakpoints</code>, your changes will apply to all the loops iterating over that map.</p>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-scss" data-lang="scss"><span class="line"><span class="cl"><span class="nv">$grid-breakpoints</span><span class="o">:</span> <span class="p">(</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">xs</span><span class="o">:</span> <span class="mi">0</span><span class="o">,</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">sm</span><span class="o">:</span> <span class="mi">576</span><span class="kt">px</span><span class="o">,</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">md</span><span class="o">:</span> <span class="mi">768</span><span class="kt">px</span><span class="o">,</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">lg</span><span class="o">:</span> <span class="mi">992</span><span class="kt">px</span><span class="o">,</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">xl</span><span class="o">:</span> <span class="mi">1200</span><span class="kt">px</span><span class="o">,</span>
|
|
</span></span><span class="line"><span class="cl"> <span class="na">xxl</span><span class="o">:</span> <span class="mi">1400</span><span class="kt">px</span>
|
|
</span></span><span class="line"><span class="cl"><span class="p">);</span>
|
|
</span></span></code></pre></div>
|
|
<p>For more information and examples on how to modify our Sass maps and variables, please refer to <a href="/docs/5.2/layout/grid/#sass">the Sass section of the Grid documentation</a>.</p>
|
|
<h2 id="creating-your-own">Creating your own <a class="anchor-link" href="#creating-your-own" aria-label="Link to this section: Creating your own"></a></h2>
|
|
<p>We encourage you to adopt these guidelines when building with Bootstrap to create your own components. We’ve extended this approach ourselves to the custom components in our documentation and examples. Components like our callouts are built just like our provided components with base and modifier classes.</p>
|
|
<div class="bd-example">
|
|
<div class="bd-callout my-0">
|
|
<strong>This is a callout.</strong> We built it custom for our docs so our messages to you stand out. It has three variants via modifier classes.
|
|
</div>
|
|
</div>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="line"><span class="cl"><span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"callout"</span><span class="p">></span>...<span class="p"></</span><span class="nt">div</span><span class="p">></span>
|
|
</span></span></code></pre></div><p>In your CSS, you’d have something like the following where the bulk of the styling is done via <code>.callout</code>. Then, the unique styles between each variant is controlled via modifier class.</p>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-scss" data-lang="scss"><span class="line"><span class="cl"><span class="c1">// Base class
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1"></span><span class="nc">.callout</span> <span class="p">{}</span>
|
|
</span></span><span class="line"><span class="cl">
|
|
</span></span><span class="line"><span class="cl"><span class="c1">// Modifier classes
|
|
</span></span></span><span class="line"><span class="cl"><span class="c1"></span><span class="nc">.callout-info</span> <span class="p">{}</span>
|
|
</span></span><span class="line"><span class="cl"><span class="nc">.callout-warning</span> <span class="p">{}</span>
|
|
</span></span><span class="line"><span class="cl"><span class="nc">.callout-danger</span> <span class="p">{}</span>
|
|
</span></span></code></pre></div><p>For the callouts, that unique styling is just a <code>border-left-color</code>. When you combine that base class with one of those modifier classes, you get your complete component family:</p>
|
|
<div class="bd-callout bd-callout-info">
|
|
<strong>This is an info callout.</strong> Example text to show it in action.
|
|
</div>
|
|
|
|
<div class="bd-callout bd-callout-warning">
|
|
<strong>This is a warning callout.</strong> Example text to show it in action.
|
|
</div>
|
|
|
|
<div class="bd-callout bd-callout-danger">
|
|
<strong>This is a danger callout.</strong> Example text to show it in action.
|
|
</div>
|
|
|
|
|
|
</div>
|
|
</main>
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|
</div>
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|
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|
|
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<footer class="bd-footer py-4 py-md-5 mt-5 bg-light">
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<div class="container py-4 py-md-5 px-4 px-md-3">
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<div class="row">
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<div class="col-lg-3 mb-3">
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<a class="d-inline-flex align-items-center mb-2 link-dark text-decoration-none" href="/" aria-label="Bootstrap">
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<svg xmlns="http://www.w3.org/2000/svg" width="40" height="32" class="d-block me-2" viewBox="0 0 118 94" role="img"><title>Bootstrap</title><path fill-rule="evenodd" clip-rule="evenodd" d="M24.509 0c-6.733 0-11.715 5.893-11.492 12.284.214 6.14-.064 14.092-2.066 20.577C8.943 39.365 5.547 43.485 0 44.014v5.972c5.547.529 8.943 4.649 10.951 11.153 2.002 6.485 2.28 14.437 2.066 20.577C12.794 88.106 17.776 94 24.51 94H93.5c6.733 0 11.714-5.893 11.491-12.284-.214-6.14.064-14.092 2.066-20.577 2.009-6.504 5.396-10.624 10.943-11.153v-5.972c-5.547-.529-8.934-4.649-10.943-11.153-2.002-6.484-2.28-14.437-2.066-20.577C105.214 5.894 100.233 0 93.5 0H24.508zM80 57.863C80 66.663 73.436 72 62.543 72H44a2 2 0 01-2-2V24a2 2 0 012-2h18.437c9.083 0 15.044 4.92 15.044 12.474 0 5.302-4.01 10.049-9.119 10.88v.277C75.317 46.394 80 51.21 80 57.863zM60.521 28.34H49.948v14.934h8.905c6.884 0 10.68-2.772 10.68-7.727 0-4.643-3.264-7.207-9.012-7.207zM49.948 49.2v16.458H60.91c7.167 0 10.964-2.876 10.964-8.281 0-5.406-3.903-8.178-11.425-8.178H49.948z" fill="currentColor"/></svg>
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|
<span class="fs-5">Bootstrap</span>
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</a>
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|
<ul class="list-unstyled small text-muted">
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<li class="mb-2">Designed and built with all the love in the world by the <a href="/docs/5.2/about/team/">Bootstrap team</a> with the help of <a href="https://github.com/twbs/bootstrap/graphs/contributors">our contributors</a>.</li>
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<li class="mb-2">Code licensed <a href="https://github.com/twbs/bootstrap/blob/main/LICENSE" target="_blank" rel="license noopener">MIT</a>, docs <a href="https://creativecommons.org/licenses/by/3.0/" target="_blank" rel="license noopener">CC BY 3.0</a>.</li>
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<li class="mb-2">Currently v5.2.0-beta1.</li>
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</ul>
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</div>
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|
<div class="col-6 col-lg-2 offset-lg-1 mb-3">
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|
<h5>Links</h5>
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<ul class="list-unstyled">
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<li class="mb-2"><a href="/">Home</a></li>
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<li class="mb-2"><a href="/docs/5.2/">Docs</a></li>
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<li class="mb-2"><a href="/docs/5.2/examples/">Examples</a></li>
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<li class="mb-2"><a href="https://themes.getbootstrap.com/">Themes</a></li>
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<li class="mb-2"><a href="https://blog.getbootstrap.com/">Blog</a></li>
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<li class="mb-2"><a href="">Swag Store</a></li>
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</ul>
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</div>
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<div class="col-6 col-lg-2 mb-3">
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|
<h5>Guides</h5>
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|
<ul class="list-unstyled">
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|
<li class="mb-2"><a href="/docs/5.2/getting-started/">Getting started</a></li>
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|
<li class="mb-2"><a href="/docs/5.2/examples/starter-template/">Starter template</a></li>
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|
<li class="mb-2"><a href="/docs/5.2/getting-started/webpack/">Webpack</a></li>
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|
<li class="mb-2"><a href="/docs/5.2/getting-started/parcel/">Parcel</a></li>
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|
</ul>
|
|
</div>
|
|
<div class="col-6 col-lg-2 mb-3">
|
|
<h5>Projects</h5>
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|
<ul class="list-unstyled">
|
|
<li class="mb-2"><a href="https://github.com/twbs/bootstrap">Bootstrap 5</a></li>
|
|
<li class="mb-2"><a href="https://github.com/twbs/bootstrap/tree/v4-dev">Bootstrap 4</a></li>
|
|
<li class="mb-2"><a href="https://github.com/twbs/icons">Icons</a></li>
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|
<li class="mb-2"><a href="https://github.com/twbs/rfs">RFS</a></li>
|
|
<li class="mb-2"><a href="https://github.com/twbs/bootstrap-npm-starter">npm starter</a></li>
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|
</ul>
|
|
</div>
|
|
<div class="col-6 col-lg-2 mb-3">
|
|
<h5>Community</h5>
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|
<ul class="list-unstyled">
|
|
<li class="mb-2"><a href="https://github.com/twbs/bootstrap/issues">Issues</a></li>
|
|
<li class="mb-2"><a href="https://github.com/twbs/bootstrap/discussions">Discussions</a></li>
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<li class="mb-2"><a href="https://github.com/sponsors/twbs">Corporate sponsors</a></li>
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<li class="mb-2"><a href="https://opencollective.com/bootstrap">Open Collective</a></li>
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|
<li class="mb-2"><a href="https://bootstrap-slack.herokuapp.com/">Slack</a></li>
|
|
<li class="mb-2"><a href="https://stackoverflow.com/questions/tagged/bootstrap-5">Stack Overflow</a></li>
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</ul>
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|
</div>
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|
</div>
|
|
</div>
|
|
</footer>
|
|
|
|
<script src="/docs/5.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-pprn3073KE6tl6bjs2QrFaJGz5/SUsLqktiwsUTF55Jfv3qYSDhgCecCxMW52nD2" crossorigin="anonymous"></script>
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<script src="https://cdn.jsdelivr.net/npm/@docsearch/js@3"></script>
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<script src="https://cdn.jsdelivr.net/npm/@stackblitz/sdk@1/bundles/sdk.umd.js"></script>
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<script src="/docs/5.2/assets/js/docs.min.js"></script>
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|
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<script>
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|
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|
document.querySelectorAll('.btn-edit').forEach(btn => {
|
|
btn.addEventListener('click', event => {
|
|
const htmlSnippet = event.target.closest('.bd-code-snippet').querySelector('.bd-example').innerHTML
|
|
StackBlitzSDK.openBootstrapSnippet(htmlSnippet)
|
|
})
|
|
})
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|
|
|
StackBlitzSDK.openBootstrapSnippet = snippet => {
|
|
const markup = `<!doctype html>
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<html lang="en">
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|
<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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|
<link href="https:\/\/cdn.jsdelivr.net\/npm\/bootstrap@5.2.0-beta1\/dist\/css\/bootstrap.min.css" rel="stylesheet">
|
|
<title>Bootstrap Example</title>
|
|
</head>
|
|
<body>
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|
|
|
<!-- Example Code -->
|
|
${snippet.replace(/^/gm, ' ')}
|
|
<!-- End Example Code -->
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|
|
|
<${'script'} src="https:\/\/cdn.jsdelivr.net\/npm\/bootstrap@5.2.0-beta1\/dist\/js\/bootstrap.bundle.min.js"></${'script'}>
|
|
</body>
|
|
</html>`
|
|
|
|
const project = {
|
|
files: {
|
|
'index.html': markup
|
|
},
|
|
title: 'Bootstrap Example',
|
|
description: `Official example from ${window.location.href}`,
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|
template: 'html',
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|
tags: ['bootstrap']
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|
}
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|
StackBlitzSDK.openProject(project, { openFile: 'index.html' })
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}
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</script>
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<div class="position-fixed"><input type="text"></div>
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</body>
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</html>
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