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c2b4f59e0c
* docs: update dropdown for v5.1 to include v5.2 * docs: update dropdown for v5.0 to include v5.2
653 lines
52 KiB
HTML
653 lines
52 KiB
HTML
<!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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<meta name="description" content="Use loading placeholders for your components or pages to indicate something may still be loading.">
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<meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
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<meta name="generator" content="Hugo 0.88.1">
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<meta name="docsearch:language" content="en">
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<meta name="docsearch:version" content="5.1">
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<title>Placeholders · Bootstrap v5.1</title>
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<link rel="mask-icon" href="/docs/5.1/assets/img/favicons/safari-pinned-tab.svg" color="#7952b3">
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<meta name="twitter:site" content="@getbootstrap">
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<meta name="twitter:creator" content="@getbootstrap">
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<meta name="twitter:title" content="Placeholders">
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<meta name="twitter:description" content="Use loading placeholders for your components or pages to indicate something may still be loading.">
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<meta name="twitter:image" content="https://getbootstrap.com/docs/5.1/assets/brand/bootstrap-social.png">
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<meta property="og:url" content="https://getbootstrap.com/docs/5.1/components/placeholders/">
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<meta property="og:title" content="Placeholders">
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<meta property="og:description" content="Use loading placeholders for your components or pages to indicate something may still be loading.">
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<meta property="og:type" content="article">
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<meta property="og:image:width" content="1000">
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ga('create', 'UA-146052-10', 'getbootstrap.com');
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<a class="dropdown-item" href="https://getbootstrap.com/docs/5.2/">
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Latest (5.2.x)
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<a class="dropdown-item current" aria-current="true" href="/docs/5.1/">v5.1.x</a>
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<a class="dropdown-item" href="https://getbootstrap.com/docs/5.0/">v5.0.x</a>
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" class="bi bi-expand" fill="currentColor" viewBox="0 0 16 16">
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<title>Expand</title>
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<path fill-rule="evenodd" d="M1 8a.5.5 0 0 1 .5-.5h13a.5.5 0 0 1 0 1h-13A.5.5 0 0 1 1 8zM7.646.146a.5.5 0 0 1 .708 0l2 2a.5.5 0 0 1-.708.708L8.5 1.707V5.5a.5.5 0 0 1-1 0V1.707L6.354 2.854a.5.5 0 1 1-.708-.708l2-2zM8 10a.5.5 0 0 1 .5.5v3.793l1.146-1.147a.5.5 0 0 1 .708.708l-2 2a.5.5 0 0 1-.708 0l-2-2a.5.5 0 0 1 .708-.708L7.5 14.293V10.5A.5.5 0 0 1 8 10z"/>
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</svg>
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" class="bi bi-collapse" fill="currentColor" viewBox="0 0 16 16">
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<title>Collapse</title>
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<path fill-rule="evenodd" d="M1 8a.5.5 0 0 1 .5-.5h13a.5.5 0 0 1 0 1h-13A.5.5 0 0 1 1 8zm7-8a.5.5 0 0 1 .5.5v3.793l1.146-1.147a.5.5 0 0 1 .708.708l-2 2a.5.5 0 0 1-.708 0l-2-2a.5.5 0 1 1 .708-.708L7.5 4.293V.5A.5.5 0 0 1 8 0zm-.5 11.707l-1.146 1.147a.5.5 0 0 1-.708-.708l2-2a.5.5 0 0 1 .708 0l2 2a.5.5 0 0 1-.708.708L8.5 11.707V15.5a.5.5 0 0 1-1 0v-3.793z"/>
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<li><a href="/docs/5.1/customize/css-variables/" class="d-inline-flex align-items-center rounded">CSS variables</a></li>
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<li><a href="/docs/5.1/layout/breakpoints/" class="d-inline-flex align-items-center rounded">Breakpoints</a></li>
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<li><a href="/docs/5.1/layout/columns/" class="d-inline-flex align-items-center rounded">Columns</a></li>
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<li><a href="/docs/5.1/layout/gutters/" class="d-inline-flex align-items-center rounded">Gutters</a></li>
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<li><a href="/docs/5.1/layout/utilities/" class="d-inline-flex align-items-center rounded">Utilities</a></li>
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<li><a href="/docs/5.1/layout/z-index/" class="d-inline-flex align-items-center rounded">Z-index</a></li>
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<li><a href="/docs/5.1/layout/css-grid/" class="d-inline-flex align-items-center rounded">CSS Grid</a></li>
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<li><a href="/docs/5.1/content/tables/" class="d-inline-flex align-items-center rounded">Tables</a></li>
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<li><a href="/docs/5.1/content/figures/" class="d-inline-flex align-items-center rounded">Figures</a></li>
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<li class="mb-1">
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<button class="btn d-inline-flex align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#forms-collapse" aria-expanded="false">
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Forms
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</button>
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<div class="collapse" id="forms-collapse">
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<ul class="list-unstyled fw-normal pb-1 small">
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<li><a href="/docs/5.1/forms/overview/" class="d-inline-flex align-items-center rounded">Overview</a></li>
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<li><a href="/docs/5.1/forms/form-control/" class="d-inline-flex align-items-center rounded">Form control</a></li>
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<li><a href="/docs/5.1/forms/select/" class="d-inline-flex align-items-center rounded">Select</a></li>
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<li><a href="/docs/5.1/forms/checks-radios/" class="d-inline-flex align-items-center rounded">Checks & radios</a></li>
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<li><a href="/docs/5.1/forms/range/" class="d-inline-flex align-items-center rounded">Range</a></li>
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<li><a href="/docs/5.1/forms/input-group/" class="d-inline-flex align-items-center rounded">Input group</a></li>
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<li><a href="/docs/5.1/forms/floating-labels/" class="d-inline-flex align-items-center rounded">Floating labels</a></li>
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<li><a href="/docs/5.1/forms/validation/" class="d-inline-flex align-items-center rounded">Validation</a></li>
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<li class="mb-1">
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<button class="btn d-inline-flex align-items-center rounded" data-bs-toggle="collapse" data-bs-target="#components-collapse" aria-expanded="true" aria-current="true">
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Components
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</button>
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<div class="collapse show" id="components-collapse">
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<ul class="list-unstyled fw-normal pb-1 small">
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<li><a href="/docs/5.1/components/accordion/" class="d-inline-flex align-items-center rounded">Accordion</a></li>
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<li><a href="/docs/5.1/components/alerts/" class="d-inline-flex align-items-center rounded">Alerts</a></li>
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<li><a href="/docs/5.1/components/badge/" class="d-inline-flex align-items-center rounded">Badge</a></li>
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<li><a href="/docs/5.1/components/breadcrumb/" class="d-inline-flex align-items-center rounded">Breadcrumb</a></li>
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<li><a href="/docs/5.1/components/buttons/" class="d-inline-flex align-items-center rounded">Buttons</a></li>
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<li><a href="/docs/5.1/components/button-group/" class="d-inline-flex align-items-center rounded">Button group</a></li>
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<li><a href="/docs/5.1/components/card/" class="d-inline-flex align-items-center rounded">Card</a></li>
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<li><a href="/docs/5.1/components/carousel/" class="d-inline-flex align-items-center rounded">Carousel</a></li>
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<li><a href="/docs/5.1/components/close-button/" class="d-inline-flex align-items-center rounded">Close button</a></li>
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<li><a href="/docs/5.1/components/collapse/" class="d-inline-flex align-items-center rounded">Collapse</a></li>
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<li><a href="/docs/5.1/components/dropdowns/" class="d-inline-flex align-items-center rounded">Dropdowns</a></li>
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<li><a href="/docs/5.1/components/list-group/" class="d-inline-flex align-items-center rounded">List group</a></li>
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<li><a href="/docs/5.1/components/modal/" class="d-inline-flex align-items-center rounded">Modal</a></li>
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<li><a href="/docs/5.1/components/navs-tabs/" class="d-inline-flex align-items-center rounded">Navs & tabs</a></li>
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<li><a href="/docs/5.1/components/navbar/" class="d-inline-flex align-items-center rounded">Navbar</a></li>
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<li><a href="/docs/5.1/components/offcanvas/" class="d-inline-flex align-items-center rounded">Offcanvas</a></li>
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<li><a href="/docs/5.1/components/pagination/" class="d-inline-flex align-items-center rounded">Pagination</a></li>
|
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<li><a href="/docs/5.1/components/placeholders/" class="d-inline-flex align-items-center rounded active" aria-current="page">Placeholders</a></li>
|
|
<li><a href="/docs/5.1/components/popovers/" class="d-inline-flex align-items-center rounded">Popovers</a></li>
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<li><a href="/docs/5.1/components/progress/" class="d-inline-flex align-items-center rounded">Progress</a></li>
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<li><a href="/docs/5.1/components/scrollspy/" class="d-inline-flex align-items-center rounded">Scrollspy</a></li>
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<li><a href="/docs/5.1/components/spinners/" class="d-inline-flex align-items-center rounded">Spinners</a></li>
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<li><a href="/docs/5.1/components/toasts/" class="d-inline-flex align-items-center rounded">Toasts</a></li>
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<li><a href="/docs/5.1/components/tooltips/" class="d-inline-flex align-items-center rounded">Tooltips</a></li>
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</ul>
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</div>
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</li>
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<li class="mb-1">
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<button class="btn d-inline-flex align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#helpers-collapse" aria-expanded="false">
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Helpers
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</button>
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<div class="collapse" id="helpers-collapse">
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<ul class="list-unstyled fw-normal pb-1 small">
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<li><a href="/docs/5.1/helpers/clearfix/" class="d-inline-flex align-items-center rounded">Clearfix</a></li>
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<li><a href="/docs/5.1/helpers/colored-links/" class="d-inline-flex align-items-center rounded">Colored links</a></li>
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<li><a href="/docs/5.1/helpers/ratio/" class="d-inline-flex align-items-center rounded">Ratio</a></li>
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<li><a href="/docs/5.1/helpers/position/" class="d-inline-flex align-items-center rounded">Position</a></li>
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<li><a href="/docs/5.1/helpers/stacks/" class="d-inline-flex align-items-center rounded">Stacks</a></li>
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<li><a href="/docs/5.1/helpers/visually-hidden/" class="d-inline-flex align-items-center rounded">Visually hidden</a></li>
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<li><a href="/docs/5.1/helpers/stretched-link/" class="d-inline-flex align-items-center rounded">Stretched link</a></li>
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<li><a href="/docs/5.1/helpers/text-truncation/" class="d-inline-flex align-items-center rounded">Text truncation</a></li>
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<li><a href="/docs/5.1/helpers/vertical-rule/" class="d-inline-flex align-items-center rounded">Vertical rule</a></li>
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</ul>
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</div>
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</li>
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<li class="mb-1">
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<button class="btn d-inline-flex align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#utilities-collapse" aria-expanded="false">
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Utilities
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</button>
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<div class="collapse" id="utilities-collapse">
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<ul class="list-unstyled fw-normal pb-1 small">
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<li><a href="/docs/5.1/utilities/api/" class="d-inline-flex align-items-center rounded">API</a></li>
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<li><a href="/docs/5.1/utilities/background/" class="d-inline-flex align-items-center rounded">Background</a></li>
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<li><a href="/docs/5.1/utilities/borders/" class="d-inline-flex align-items-center rounded">Borders</a></li>
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<li><a href="/docs/5.1/utilities/colors/" class="d-inline-flex align-items-center rounded">Colors</a></li>
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<li><a href="/docs/5.1/utilities/display/" class="d-inline-flex align-items-center rounded">Display</a></li>
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<li><a href="/docs/5.1/utilities/flex/" class="d-inline-flex align-items-center rounded">Flex</a></li>
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<li><a href="/docs/5.1/utilities/float/" class="d-inline-flex align-items-center rounded">Float</a></li>
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<li><a href="/docs/5.1/utilities/interactions/" class="d-inline-flex align-items-center rounded">Interactions</a></li>
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<li><a href="/docs/5.1/utilities/opacity/" class="d-inline-flex align-items-center rounded">Opacity</a></li>
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<li><a href="/docs/5.1/utilities/overflow/" class="d-inline-flex align-items-center rounded">Overflow</a></li>
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<li><a href="/docs/5.1/utilities/position/" class="d-inline-flex align-items-center rounded">Position</a></li>
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<li><a href="/docs/5.1/utilities/shadows/" class="d-inline-flex align-items-center rounded">Shadows</a></li>
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<li><a href="/docs/5.1/utilities/sizing/" class="d-inline-flex align-items-center rounded">Sizing</a></li>
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<li><a href="/docs/5.1/utilities/spacing/" class="d-inline-flex align-items-center rounded">Spacing</a></li>
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<li><a href="/docs/5.1/utilities/text/" class="d-inline-flex align-items-center rounded">Text</a></li>
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<li><a href="/docs/5.1/utilities/vertical-align/" class="d-inline-flex align-items-center rounded">Vertical align</a></li>
|
|
<li><a href="/docs/5.1/utilities/visibility/" class="d-inline-flex align-items-center rounded">Visibility</a></li>
|
|
</ul>
|
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</div>
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</li>
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<li class="mb-1">
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<button class="btn d-inline-flex align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#extend-collapse" aria-expanded="false">
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Extend
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</button>
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<div class="collapse" id="extend-collapse">
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<ul class="list-unstyled fw-normal pb-1 small">
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<li><a href="/docs/5.1/extend/approach/" class="d-inline-flex align-items-center rounded">Approach</a></li>
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<li><a href="/docs/5.1/extend/icons/" class="d-inline-flex align-items-center rounded">Icons</a></li>
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</ul>
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</div>
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</li>
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<li class="mb-1">
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<button class="btn d-inline-flex align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#about-collapse" aria-expanded="false">
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About
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</button>
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<div class="collapse" id="about-collapse">
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<ul class="list-unstyled fw-normal pb-1 small">
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<li><a href="/docs/5.1/about/overview/" class="d-inline-flex align-items-center rounded">Overview</a></li>
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<li><a href="/docs/5.1/about/team/" class="d-inline-flex align-items-center rounded">Team</a></li>
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<li><a href="/docs/5.1/about/brand/" class="d-inline-flex align-items-center rounded">Brand</a></li>
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<li><a href="/docs/5.1/about/license/" class="d-inline-flex align-items-center rounded">License</a></li>
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<li><a href="/docs/5.1/about/translations/" class="d-inline-flex align-items-center rounded">Translations</a></li>
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</ul>
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</div>
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</li>
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<li class="my-3 mx-4 border-top"></li>
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<li>
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<a href="/docs/5.1/migration/" class="d-inline-flex align-items-center rounded">
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Migration
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</a>
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</li>
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</ul>
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</nav>
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</aside>
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<main class="bd-main order-1">
|
|
<div class="bd-intro ps-lg-4">
|
|
<div class="d-md-flex flex-md-row-reverse align-items-center justify-content-between">
|
|
<a class="btn btn-sm btn-bd-light mb-2 mb-md-0" href="https://github.com/twbs/bootstrap/blob/main/site/content/docs/5.1/components/placeholders.md" title="View and edit this file on GitHub" target="_blank" rel="noopener">View on GitHub</a>
|
|
<h1 class="bd-title" id="content">Placeholders</h1>
|
|
</div>
|
|
<p class="bd-lead">Use loading placeholders for your components or pages to indicate something may still be loading.</p>
|
|
<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
|
|
|
|
</div>
|
|
|
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|
|
<div class="bd-toc mt-4 mb-5 my-md-0 ps-xl-3 mb-lg-5 text-muted">
|
|
<strong class="d-block h6 my-2 pb-2 border-bottom">On this page</strong>
|
|
<nav id="TableOfContents">
|
|
<ul>
|
|
<li><a href="#about">About</a></li>
|
|
<li><a href="#example">Example</a></li>
|
|
<li><a href="#how-it-works">How it works</a>
|
|
<ul>
|
|
<li><a href="#width">Width</a></li>
|
|
<li><a href="#color">Color</a></li>
|
|
<li><a href="#sizing">Sizing</a></li>
|
|
<li><a href="#animation">Animation</a></li>
|
|
</ul>
|
|
</li>
|
|
<li><a href="#sass">Sass</a>
|
|
<ul>
|
|
<li><a href="#variables">Variables</a></li>
|
|
</ul>
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|
</li>
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</ul>
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|
</nav>
|
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</div>
|
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|
|
|
|
<div class="bd-content ps-lg-4">
|
|
|
|
|
|
<h2 id="about">About</h2>
|
|
<p>Placeholders can be used to enhance the experience of your application. They’re built only with HTML and CSS, meaning you don’t need any JavaScript to create them. You will, however, need some custom JavaScript to toggle their visibility. Their appearance, color, and sizing can be easily customized with our utility classes.</p>
|
|
<h2 id="example">Example</h2>
|
|
<p>In the example below, we take a typical card component and recreate it with placeholders applied to create a “loading card”. Size and proportions are the same between the two.</p>
|
|
<div class="bd-example bd-example-placeholder-cards d-flex justify-content-around">
|
|
<div class="card">
|
|
<svg class="bd-placeholder-img card-img-top" width="100%" height="180" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#20c997"/></svg>
|
|
|
|
<div class="card-body">
|
|
<h5 class="card-title">Card title</h5>
|
|
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
|
|
<a href="#" class="btn btn-primary">Go somewhere</a>
|
|
</div>
|
|
</div>
|
|
<div class="card" aria-hidden="true">
|
|
<svg class="bd-placeholder-img card-img-top" width="100%" height="180" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#868e96"/></svg>
|
|
|
|
<div class="card-body">
|
|
<div class="h5 card-title placeholder-glow">
|
|
<span class="placeholder col-6"></span>
|
|
</div>
|
|
<p class="card-text placeholder-glow">
|
|
<span class="placeholder col-7"></span>
|
|
<span class="placeholder col-4"></span>
|
|
<span class="placeholder col-4"></span>
|
|
<span class="placeholder col-6"></span>
|
|
<span class="placeholder col-8"></span>
|
|
</p>
|
|
<a href="#" tabindex="-1" class="btn btn-primary disabled placeholder col-6"></a>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"card"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">"..."</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-img-top"</span> <span class="na">alt</span><span class="o">=</span><span class="s">"..."</span><span class="p">></span>
|
|
|
|
<span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-body"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">h5</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-title"</span><span class="p">></span>Card title<span class="p"></</span><span class="nt">h5</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-text"</span><span class="p">></span>Some quick example text to build on the card title and make up the bulk of the card's content.<span class="p"></</span><span class="nt">p</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">a</span> <span class="na">href</span><span class="o">=</span><span class="s">"#"</span> <span class="na">class</span><span class="o">=</span><span class="s">"btn btn-primary"</span><span class="p">></span>Go somewhere<span class="p"></</span><span class="nt">a</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">div</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">div</span><span class="p">></span>
|
|
|
|
<span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"card"</span> <span class="na">aria-hidden</span><span class="o">=</span><span class="s">"true"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">"..."</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-img-top"</span> <span class="na">alt</span><span class="o">=</span><span class="s">"..."</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-body"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">h5</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-title placeholder-glow"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-6"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">h5</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">"card-text placeholder-glow"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-7"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-4"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-4"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-6"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-8"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">p</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">a</span> <span class="na">href</span><span class="o">=</span><span class="s">"#"</span> <span class="na">tabindex</span><span class="o">=</span><span class="s">"-1"</span> <span class="na">class</span><span class="o">=</span><span class="s">"btn btn-primary disabled placeholder col-6"</span><span class="p">></</span><span class="nt">a</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">div</span><span class="p">></span>
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<span class="p"></</span><span class="nt">div</span><span class="p">></span>
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</code></pre></div><h2 id="how-it-works">How it works</h2>
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|
<p>Create placeholders with the <code>.placeholder</code> class and a grid column class (e.g., <code>.col-6</code>) to set the <code>width</code>. They can replace the text inside an element or be added as a modifier class to an existing component.</p>
|
|
<p>We apply additional styling to <code>.btn</code>s via <code>::before</code> to ensure the <code>height</code> is respected. You may extend this pattern for other situations as needed, or add a <code>&nbsp;</code> within the element to reflect the height when actual text is rendered in its place.</p>
|
|
<div class="bd-example">
|
|
<p aria-hidden="true">
|
|
<span class="placeholder col-6"></span>
|
|
</p>
|
|
|
|
<a href="#" tabindex="-1" class="btn btn-primary disabled placeholder col-4" aria-hidden="true"></a>
|
|
</div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="p"><</span><span class="nt">p</span> <span class="na">aria-hidden</span><span class="o">=</span><span class="s">"true"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-6"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">p</span><span class="p">></span>
|
|
|
|
<span class="p"><</span><span class="nt">a</span> <span class="na">href</span><span class="o">=</span><span class="s">"#"</span> <span class="na">tabindex</span><span class="o">=</span><span class="s">"-1"</span> <span class="na">class</span><span class="o">=</span><span class="s">"btn btn-primary disabled placeholder col-4"</span> <span class="na">aria-hidden</span><span class="o">=</span><span class="s">"true"</span><span class="p">></</span><span class="nt">a</span><span class="p">></span></code></pre></div>
|
|
<div class="bd-callout bd-callout-info">
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|
The use of <code>aria-hidden="true"</code> only indicates that the element should be hidden to screen readers. The <em>loading</em> behavior of the placeholder depends on how authors will actually use the placeholder styles, how they plan to update things, etc. Some JavaScript code may be needed to <em>swap</em> the state of the placeholder and inform AT users of the update.
|
|
</div>
|
|
|
|
<h3 id="width">Width</h3>
|
|
<p>You can change the <code>width</code> through grid column classes, width utilities, or inline styles.</p>
|
|
<div class="bd-example">
|
|
<span class="placeholder col-6"></span>
|
|
<span class="placeholder w-75"></span>
|
|
<span class="placeholder" style="width: 25%;"></span>
|
|
</div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-6"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder w-75"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder"</span> <span class="na">style</span><span class="o">=</span><span class="s">"width: 25%;"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span></code></pre></div>
|
|
<h3 id="color">Color</h3>
|
|
<p>By default, the <code>placeholder</code> uses <code>currentColor</code>. This can be overridden with a custom color or utility class.</p>
|
|
<div class="bd-example">
|
|
<span class="placeholder col-12"></span>
|
|
|
|
<span class="placeholder col-12 bg-primary"></span>
|
|
<span class="placeholder col-12 bg-secondary"></span>
|
|
<span class="placeholder col-12 bg-success"></span>
|
|
<span class="placeholder col-12 bg-danger"></span>
|
|
<span class="placeholder col-12 bg-warning"></span>
|
|
<span class="placeholder col-12 bg-info"></span>
|
|
<span class="placeholder col-12 bg-light"></span>
|
|
<span class="placeholder col-12 bg-dark"></span>
|
|
</div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-primary"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-secondary"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-success"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-danger"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-warning"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-info"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-light"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 bg-dark"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span></code></pre></div>
|
|
<h3 id="sizing">Sizing</h3>
|
|
<p>The size of <code>.placeholder</code>s are based on the typographic style of the parent element. Customize them with sizing modifiers: <code>.placeholder-lg</code>, <code>.placeholder-sm</code>, or <code>.placeholder-xs</code>.</p>
|
|
<div class="bd-example">
|
|
<span class="placeholder col-12 placeholder-lg"></span>
|
|
<span class="placeholder col-12"></span>
|
|
<span class="placeholder col-12 placeholder-sm"></span>
|
|
<span class="placeholder col-12 placeholder-xs"></span>
|
|
</div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 placeholder-lg"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 placeholder-sm"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12 placeholder-xs"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span></code></pre></div>
|
|
<h3 id="animation">Animation</h3>
|
|
<p>Animate placeholders with <code>.placeholder-glow</code> or <code>.placeholder-wave</code> to better convey the perception of something being <em>actively</em> loaded.</p>
|
|
<div class="bd-example">
|
|
<p class="placeholder-glow">
|
|
<span class="placeholder col-12"></span>
|
|
</p>
|
|
|
|
<p class="placeholder-wave">
|
|
<span class="placeholder col-12"></span>
|
|
</p>
|
|
</div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-html" data-lang="html"><span class="p"><</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder-glow"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">p</span><span class="p">></span>
|
|
|
|
<span class="p"><</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder-wave"</span><span class="p">></span>
|
|
<span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"placeholder col-12"</span><span class="p">></</span><span class="nt">span</span><span class="p">></span>
|
|
<span class="p"></</span><span class="nt">p</span><span class="p">></span></code></pre></div>
|
|
<h2 id="sass">Sass</h2>
|
|
<h3 id="variables">Variables</h3>
|
|
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-scss" data-lang="scss"><span class="nv">$placeholder-opacity-max</span><span class="o">:</span> <span class="mf">.5</span><span class="p">;</span>
|
|
<span class="nv">$placeholder-opacity-min</span><span class="o">:</span> <span class="mf">.2</span><span class="p">;</span>
|
|
</code></pre></div>
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