0
0
mirror of https://github.com/twbs/bootstrap.git synced 2025-01-23 15:52:21 +01:00
2020-08-06 19:27:04 +03:00

514 lines
26 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="For faster mobile-friendly and responsive development, Bootstrap includes dozens of utility classes for showing, hiding, aligning, and spacing content.">
<meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
<meta name="generator" content="Jekyll v4.1.1">
<meta name="docsearch:language" content="en">
<meta name="docsearch:version" content="4.5">
<title>Utilities for layout · Bootstrap v4.5</title>
<link rel="canonical" href="https://getbootstrap.com/docs/4.5/layout/utilities-for-layout/">
<!-- Bootstrap core CSS -->
<link href="/docs/4.5/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
<!-- Documentation extras -->
<link href="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.css" rel="stylesheet">
<link href="/docs/4.5/assets/css/docs.min.css" rel="stylesheet">
<!-- Favicons -->
<link rel="apple-touch-icon" href="/docs/4.5/assets/img/favicons/apple-touch-icon.png" sizes="180x180">
<link rel="icon" href="/docs/4.5/assets/img/favicons/favicon-32x32.png" sizes="32x32" type="image/png">
<link rel="icon" href="/docs/4.5/assets/img/favicons/favicon-16x16.png" sizes="16x16" type="image/png">
<link rel="manifest" href="/docs/4.5/assets/img/favicons/manifest.json">
<link rel="mask-icon" href="/docs/4.5/assets/img/favicons/safari-pinned-tab.svg" color="#563d7c">
<link rel="icon" href="/docs/4.5/assets/img/favicons/favicon.ico">
<meta name="msapplication-config" content="/docs/4.5/assets/img/favicons/browserconfig.xml">
<meta name="theme-color" content="#563d7c">
<!-- Twitter -->
<meta name="twitter:card" content="summary">
<meta name="twitter:site" content="@getbootstrap">
<meta name="twitter:creator" content="@getbootstrap">
<meta name="twitter:title" content="Utilities for layout">
<meta name="twitter:description" content="For faster mobile-friendly and responsive development, Bootstrap includes dozens of utility classes for showing, hiding, aligning, and spacing content.">
<meta name="twitter:image" content="https://getbootstrap.com/docs/4.5/assets/brand/bootstrap-social-logo.png">
<!-- Facebook -->
<meta property="og:url" content="https://getbootstrap.com/docs/4.5/layout/utilities-for-layout/">
<meta property="og:title" content="Utilities for layout">
<meta property="og:description" content="For faster mobile-friendly and responsive development, Bootstrap includes dozens of utility classes for showing, hiding, aligning, and spacing content.">
<meta property="og:type" content="website">
<meta property="og:image" content="https://getbootstrap.com/docs/4.5/assets/brand/bootstrap-social.png">
<meta property="og:image:type" content="image/png">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
<script>
window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
ga('create', 'UA-146052-10', 'getbootstrap.com');
ga('set', 'anonymizeIp', true);
ga('send', 'pageview');
</script>
<script async src="https://www.google-analytics.com/analytics.js"></script>
</head>
<body>
<div class="skippy overflow-hidden">
<div class="container-xl">
<a class="sr-only sr-only-focusable d-inline-flex p-2 m-1" href="#content">Skip to main content</a><a class="sr-only sr-only-focusable d-none d-md-inline-flex p-2 m-1" href="#bd-docs-nav">Skip to docs navigation</a></div>
</div>
<header class="navbar navbar-expand navbar-dark flex-column flex-md-row bd-navbar">
<a class="navbar-brand mr-0 mr-md-2" href="/" aria-label="Bootstrap"><svg xmlns="http://www.w3.org/2000/svg" width="36" height="36" class="d-block" viewBox="0 0 612 612" role="img" focusable="false"><title>Bootstrap</title><path fill="currentColor" d="M510 8a94.3 94.3 0 0 1 94 94v408a94.3 94.3 0 0 1-94 94H102a94.3 94.3 0 0 1-94-94V102a94.3 94.3 0 0 1 94-94h408m0-8H102C45.9 0 0 45.9 0 102v408c0 56.1 45.9 102 102 102h408c56.1 0 102-45.9 102-102V102C612 45.9 566.1 0 510 0z"/><path fill="currentColor" d="M196.77 471.5V154.43h124.15c54.27 0 91 31.64 91 79.1 0 33-24.17 63.72-54.71 69.21v1.76c43.07 5.49 70.75 35.82 70.75 78 0 55.81-40 89-107.45 89zm39.55-180.4h63.28c46.8 0 72.29-18.68 72.29-53 0-31.42-21.53-48.78-60-48.78h-75.57zm78.22 145.46c47.68 0 72.73-19.34 72.73-56s-25.93-55.37-76.46-55.37h-74.49v111.4z"/></svg></a>
<div class="navbar-nav-scroll">
<ul class="navbar-nav bd-navbar-nav flex-row">
<li class="nav-item">
<a class="nav-link " href="/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Bootstrap');">Home</a>
</li>
<li class="nav-item">
<a class="nav-link active" href="/docs/4.5/getting-started/introduction/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Docs');">Documentation</a>
</li>
<li class="nav-item">
<a class="nav-link " href="/docs/4.5/examples/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Examples');">Examples</a>
</li>
<li class="nav-item">
<a class="nav-link" href="https://icons.getbootstrap.com/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Icons');" target="_blank" rel="noopener">Icons</a>
</li>
<li class="nav-item">
<a class="nav-link" href="https://themes.getbootstrap.com/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Themes');" target="_blank" rel="noopener">Themes</a>
</li>
<li class="nav-item">
<a class="nav-link" href="https://expo.getbootstrap.com/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Expo');" target="_blank" rel="noopener">Expo</a>
</li>
<li class="nav-item">
<a class="nav-link" href="https://blog.getbootstrap.com/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Blog');" target="_blank" rel="noopener">Blog</a>
</li>
</ul>
</div>
<ul class="navbar-nav ml-md-auto">
<li class="nav-item dropdown">
<a class="nav-item nav-link dropdown-toggle mr-md-2" href="#" id="bd-versions" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
v4.5
</a>
<div class="dropdown-menu dropdown-menu-md-right" aria-labelledby="bd-versions">
<a class="dropdown-item active" href="/docs/4.5/">Latest (4.5.x)</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="https://getbootstrap.com/docs/3.4/">v3.4.1</a>
<a class="dropdown-item" href="https://getbootstrap.com/2.3.2/">v2.3.2</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/docs/versions/">All versions</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link pl-2 pr-1 mx-1 py-3 my-n2" href="https://github.com/twbs" target="_blank" rel="noopener" aria-label="GitHub"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 499.36" role="img" focusable="false"><title>GitHub</title><path fill="currentColor" fill-rule="evenodd" d="M256 0C114.64 0 0 114.61 0 256c0 113.09 73.34 209 175.08 242.9 12.8 2.35 17.47-5.56 17.47-12.34 0-6.08-.22-22.18-.35-43.54-71.2 15.49-86.2-34.34-86.2-34.34-11.64-29.57-28.42-37.45-28.42-37.45-23.27-15.84 1.73-15.55 1.73-15.55 25.69 1.81 39.21 26.38 39.21 26.38 22.84 39.12 59.92 27.82 74.5 21.27 2.33-16.54 8.94-27.82 16.25-34.22-56.84-6.43-116.6-28.43-116.6-126.49 0-27.95 10-50.8 26.35-68.69-2.63-6.48-11.42-32.5 2.51-67.75 0 0 21.49-6.88 70.4 26.24a242.65 242.65 0 0 1 128.18 0c48.87-33.13 70.33-26.24 70.33-26.24 14 35.25 5.18 61.27 2.55 67.75 16.41 17.9 26.31 40.75 26.31 68.69 0 98.35-59.85 120-116.88 126.32 9.19 7.9 17.38 23.53 17.38 47.41 0 34.22-.31 61.83-.31 70.23 0 6.85 4.61 14.81 17.6 12.31C438.72 464.97 512 369.08 512 256.02 512 114.62 397.37 0 256 0z"/></svg></a>
</li>
<li class="nav-item">
<a class="nav-link px-1 mx-1 py-3 my-n2" href="https://twitter.com/getbootstrap" target="_blank" rel="noopener" aria-label="Twitter"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 416.32" role="img" focusable="false"><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></a>
</li>
<li class="nav-item">
<a class="nav-link px-1 mx-1 py-3 my-n2" href="https://bootstrap-slack.herokuapp.com/" target="_blank" rel="noopener" aria-label="Slack"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 512" role="img" focusable="false"><title>Slack</title><path fill="currentColor" d="M210.787 234.832l68.31-22.883 22.1 65.977-68.309 22.882z"/><path fill="currentColor" d="M490.54 185.6C437.7 9.59 361.6-31.34 185.6 21.46S-31.3 150.4 21.46 326.4 150.4 543.3 326.4 490.54 543.34 361.6 490.54 185.6zM401.7 299.8l-33.15 11.05 11.46 34.38c4.5 13.92-2.87 29.06-16.78 33.56-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18l-11.46-34.38-68.36 22.92 11.46 34.38c4.5 13.92-2.87 29.06-16.78 33.56-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18l-11.46-34.43-33.15 11.05c-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18c-4.5-13.92 2.87-29.06 16.78-33.56l33.12-11.03-22.1-65.9-33.15 11.05c-2.87.82-6.14 1.64-9 1.23a27.32 27.32 0 0 1-24.56-18c-4.48-13.93 2.89-29.07 16.81-33.58l33.15-11.05-11.46-34.38c-4.5-13.92 2.87-29.06 16.78-33.56s29.06 2.87 33.56 16.78l11.46 34.38 68.36-22.92-11.46-34.38c-4.5-13.92 2.87-29.06 16.78-33.56s29.06 2.87 33.56 16.78l11.47 34.42 33.15-11.05c13.92-4.5 29.06 2.87 33.56 16.78s-2.87 29.06-16.78 33.56L329.7 194.6l22.1 65.9 33.15-11.05c13.92-4.5 29.06 2.87 33.56 16.78s-2.88 29.07-16.81 33.57z"/></svg></a>
</li>
<li class="nav-item">
<a class="nav-link px-1 mx-1 py-3 my-n2" href="https://opencollective.com/bootstrap/" target="_blank" rel="noopener" aria-label="Open Collective"><svg xmlns="http://www.w3.org/2000/svg" fill="currentColor" fill-rule="evenodd" class="navbar-nav-svg" viewBox="0 0 40 41" role="img" focusable="false"><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></a>
</li>
</ul>
<a class="btn btn-bd-download d-none d-lg-inline-block mb-3 mb-md-0 ml-md-3" href="/docs/4.5/getting-started/download/">Download</a>
</header>
<div class="container-fluid">
<div class="row flex-xl-nowrap">
<div class="col-md-3 col-xl-2 bd-sidebar">
<form role="search" class="bd-search d-flex align-items-center">
<input type="search" class="form-control" id="search-input" placeholder="Search..." aria-label="Search for..." autocomplete="off" data-docs-version="4.5">
<button class="btn bd-search-docs-toggle d-md-none p-0 ml-3" type="button" data-toggle="collapse" data-target="#bd-docs-nav" aria-controls="bd-docs-nav" aria-expanded="false" aria-label="Toggle docs navigation"><svg xmlns="http://www.w3.org/2000/svg" width="30" height="30" viewBox="0 0 30 30" role="img" focusable="false"><title>Menu</title><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"/></svg></button>
</form>
<nav class="collapse bd-links" id="bd-docs-nav" aria-label="Main navigation"><div class="bd-toc-item">
<a class="bd-toc-link" href="/docs/4.5/getting-started/introduction/">
Getting started
</a>
<ul class="nav bd-sidenav"><li>
<a href="/docs/4.5/getting-started/introduction/">
Introduction
</a>
</li><li>
<a href="/docs/4.5/getting-started/download/">
Download
</a>
</li><li>
<a href="/docs/4.5/getting-started/contents/">
Contents
</a>
</li><li>
<a href="/docs/4.5/getting-started/browsers-devices/">
Browsers & devices
</a>
</li><li>
<a href="/docs/4.5/getting-started/javascript/">
JavaScript
</a>
</li><li>
<a href="/docs/4.5/getting-started/theming/">
Theming
</a>
</li><li>
<a href="/docs/4.5/getting-started/build-tools/">
Build tools
</a>
</li><li>
<a href="/docs/4.5/getting-started/webpack/">
Webpack
</a>
</li><li>
<a href="/docs/4.5/getting-started/accessibility/">
Accessibility
</a>
</li></ul>
</div><div class="bd-toc-item active">
<a class="bd-toc-link" href="/docs/4.5/layout/overview/">
Layout
</a>
<ul class="nav bd-sidenav"><li>
<a href="/docs/4.5/layout/overview/">
Overview
</a>
</li><li>
<a href="/docs/4.5/layout/grid/">
Grid
</a>
</li><li class="active bd-sidenav-active">
<a href="/docs/4.5/layout/utilities-for-layout/">
Utilities for layout
</a>
</li></ul>
</div><div class="bd-toc-item">
<a class="bd-toc-link" href="/docs/4.5/content/reboot/">
Content
</a>
<ul class="nav bd-sidenav"><li>
<a href="/docs/4.5/content/reboot/">
Reboot
</a>
</li><li>
<a href="/docs/4.5/content/typography/">
Typography
</a>
</li><li>
<a href="/docs/4.5/content/code/">
Code
</a>
</li><li>
<a href="/docs/4.5/content/images/">
Images
</a>
</li><li>
<a href="/docs/4.5/content/tables/">
Tables
</a>
</li><li>
<a href="/docs/4.5/content/figures/">
Figures
</a>
</li></ul>
</div><div class="bd-toc-item">
<a class="bd-toc-link" href="/docs/4.5/components/alerts/">
Components
</a>
<ul class="nav bd-sidenav"><li>
<a href="/docs/4.5/components/alerts/">
Alerts
</a>
</li><li>
<a href="/docs/4.5/components/badge/">
Badge
</a>
</li><li>
<a href="/docs/4.5/components/breadcrumb/">
Breadcrumb
</a>
</li><li>
<a href="/docs/4.5/components/buttons/">
Buttons
</a>
</li><li>
<a href="/docs/4.5/components/button-group/">
Button group
</a>
</li><li>
<a href="/docs/4.5/components/card/">
Card
</a>
</li><li>
<a href="/docs/4.5/components/carousel/">
Carousel
</a>
</li><li>
<a href="/docs/4.5/components/collapse/">
Collapse
</a>
</li><li>
<a href="/docs/4.5/components/dropdowns/">
Dropdowns
</a>
</li><li>
<a href="/docs/4.5/components/forms/">
Forms
</a>
</li><li>
<a href="/docs/4.5/components/input-group/">
Input group
</a>
</li><li>
<a href="/docs/4.5/components/jumbotron/">
Jumbotron
</a>
</li><li>
<a href="/docs/4.5/components/list-group/">
List group
</a>
</li><li>
<a href="/docs/4.5/components/media-object/">
Media object
</a>
</li><li>
<a href="/docs/4.5/components/modal/">
Modal
</a>
</li><li>
<a href="/docs/4.5/components/navs/">
Navs
</a>
</li><li>
<a href="/docs/4.5/components/navbar/">
Navbar
</a>
</li><li>
<a href="/docs/4.5/components/pagination/">
Pagination
</a>
</li><li>
<a href="/docs/4.5/components/popovers/">
Popovers
</a>
</li><li>
<a href="/docs/4.5/components/progress/">
Progress
</a>
</li><li>
<a href="/docs/4.5/components/scrollspy/">
Scrollspy
</a>
</li><li>
<a href="/docs/4.5/components/spinners/">
Spinners
</a>
</li><li>
<a href="/docs/4.5/components/toasts/">
Toasts
</a>
</li><li>
<a href="/docs/4.5/components/tooltips/">
Tooltips
</a>
</li></ul>
</div><div class="bd-toc-item">
<a class="bd-toc-link" href="/docs/4.5/utilities/borders/">
Utilities
</a>
<ul class="nav bd-sidenav"><li>
<a href="/docs/4.5/utilities/borders/">
Borders
</a>
</li><li>
<a href="/docs/4.5/utilities/clearfix/">
Clearfix
</a>
</li><li>
<a href="/docs/4.5/utilities/close-icon/">
Close icon
</a>
</li><li>
<a href="/docs/4.5/utilities/colors/">
Colors
</a>
</li><li>
<a href="/docs/4.5/utilities/display/">
Display
</a>
</li><li>
<a href="/docs/4.5/utilities/embed/">
Embed
</a>
</li><li>
<a href="/docs/4.5/utilities/flex/">
Flex
</a>
</li><li>
<a href="/docs/4.5/utilities/float/">
Float
</a>
</li><li>
<a href="/docs/4.5/utilities/image-replacement/">
Image replacement
</a>
</li><li>
<a href="/docs/4.5/utilities/interactions/">
Interactions
</a>
</li><li>
<a href="/docs/4.5/utilities/overflow/">
Overflow
</a>
</li><li>
<a href="/docs/4.5/utilities/position/">
Position
</a>
</li><li>
<a href="/docs/4.5/utilities/screen-readers/">
Screen readers
</a>
</li><li>
<a href="/docs/4.5/utilities/shadows/">
Shadows
</a>
</li><li>
<a href="/docs/4.5/utilities/sizing/">
Sizing
</a>
</li><li>
<a href="/docs/4.5/utilities/spacing/">
Spacing
</a>
</li><li>
<a href="/docs/4.5/utilities/stretched-link/">
Stretched link
</a>
</li><li>
<a href="/docs/4.5/utilities/text/">
Text
</a>
</li><li>
<a href="/docs/4.5/utilities/vertical-align/">
Vertical align
</a>
</li><li>
<a href="/docs/4.5/utilities/visibility/">
Visibility
</a>
</li></ul>
</div><div class="bd-toc-item">
<a class="bd-toc-link" href="/docs/4.5/extend/approach/">
Extend
</a>
<ul class="nav bd-sidenav"><li>
<a href="/docs/4.5/extend/approach/">
Approach
</a>
</li><li>
<a href="/docs/4.5/extend/icons/">
Icons
</a>
</li></ul>
</div><div class="bd-toc-item">
<a class="bd-toc-link" href="/docs/4.5/migration/">
Migration
</a>
<ul class="nav bd-sidenav"></ul>
</div><div class="bd-toc-item">
<a class="bd-toc-link" href="/docs/4.5/about/overview/">
About
</a>
<ul class="nav bd-sidenav"><li>
<a href="/docs/4.5/about/overview/">
Overview
</a>
</li><li>
<a href="/docs/4.5/about/team/">
Team
</a>
</li><li>
<a href="/docs/4.5/about/brand/">
Brand
</a>
</li><li>
<a href="/docs/4.5/about/license/">
License
</a>
</li><li>
<a href="/docs/4.5/about/translations/">
Translations
</a>
</li></ul>
</div></nav>
</div>
<nav class="d-none d-xl-block col-xl-2 bd-toc" aria-label="Secondary navigation">
<ul class="section-nav">
<li class="toc-entry toc-h2"><a href="#changing-display">Changing display</a></li>
<li class="toc-entry toc-h2"><a href="#flexbox-options">Flexbox options</a></li>
<li class="toc-entry toc-h2"><a href="#margin-and-padding">Margin and padding</a></li>
<li class="toc-entry toc-h2"><a href="#toggle-visibility">Toggle visibility</a></li>
</ul>
</nav>
<main class="col-md-9 col-xl-8 py-md-3 pl-md-5 bd-content" role="main">
<div class="d-md-flex flex-md-row-reverse align-items-center justify-content-between">
<a class="btn btn-sm btn-bd-light my-2 my-md-0" href="https://github.com/twbs/bootstrap/tree/v4-dev/site/docs/4.5/layout/utilities-for-layout.md" title="View and edit this file on GitHub" target="_blank" rel="noopener">View on GitHub</a>
<h1 class="bd-title" id="content">Utilities for layout</h1>
</div>
<p class="bd-lead">For faster mobile-friendly and responsive development, Bootstrap includes dozens of utility classes for showing, hiding, aligning, and spacing content.</p>
<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
<h2 id="changing-display">Changing <code class="language-plaintext highlighter-rouge">display</code></h2>
<p>Use our <a href="/docs/4.5/utilities/display/">display utilities</a> for responsively toggling common values of the <code class="language-plaintext highlighter-rouge">display</code> property. Mix it with our grid system, content, or components to show or hide them across specific viewports.</p>
<h2 id="flexbox-options">Flexbox options</h2>
<p>Bootstrap 4 is built with flexbox, but not every elements <code class="language-plaintext highlighter-rouge">display</code> has been changed to <code class="language-plaintext highlighter-rouge">display: flex</code> as this would add many unnecessary overrides and unexpectedly change key browser behaviors. Most of <a href="/docs/4.5/components/alerts/">our components</a> are built with flexbox enabled.</p>
<p>Should you need to add <code class="language-plaintext highlighter-rouge">display: flex</code> to an element, do so with <code class="language-plaintext highlighter-rouge">.d-flex</code> or one of the responsive variants (e.g., <code class="language-plaintext highlighter-rouge">.d-sm-flex</code>). Youll need this class or <code class="language-plaintext highlighter-rouge">display</code> value to allow the use of our extra <a href="/docs/4.5/utilities/flex/">flexbox utilities</a> for sizing, alignment, spacing, and more.</p>
<h2 id="margin-and-padding">Margin and padding</h2>
<p>Use the <code class="language-plaintext highlighter-rouge">margin</code> and <code class="language-plaintext highlighter-rouge">padding</code> <a href="/docs/4.5/utilities/spacing/">spacing utilities</a> to control how elements and components are spaced and sized. Bootstrap 4 includes a five-level scale for spacing utilities, based on a <code class="language-plaintext highlighter-rouge">1rem</code> value default <code class="language-plaintext highlighter-rouge">$spacer</code> variable. Choose values for all viewports (e.g., <code class="language-plaintext highlighter-rouge">.mr-3</code> for <code class="language-plaintext highlighter-rouge">margin-right: 1rem</code>), or pick responsive variants to target specific viewports (e.g., <code class="language-plaintext highlighter-rouge">.mr-md-3</code> for <code class="language-plaintext highlighter-rouge">margin-right: 1rem</code> starting at the <code class="language-plaintext highlighter-rouge">md</code> breakpoint).</p>
<h2 id="toggle-visibility">Toggle <code class="language-plaintext highlighter-rouge">visibility</code></h2>
<p>When toggling <code class="language-plaintext highlighter-rouge">display</code> isnt needed, you can toggle the <code class="language-plaintext highlighter-rouge">visibility</code> of an element with our <a href="/docs/4.5/utilities/visibility/">visibility utilities</a>. Invisible elements will still affect the layout of the page, but are visually hidden from visitors.</p>
</main>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script>window.jQuery || document.write('<script src="/docs/4.5/assets/js/vendor/jquery.slim.min.js"><\/script>')</script><script src="/docs/4.5/dist/js/bootstrap.bundle.min.js" integrity="sha384-LtrjvnR4Twt/qOuYxE721u19sVFLVSA4hf/rRt6PrZTmiPltdZcI7q7PXQBYTKyf" crossorigin="anonymous"></script><script src="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.js"></script><script src="/docs/4.5/assets/js/docs.min.js"></script>
</body>
</html>