Dernière version du 29 mai 2021 à 15:53

Liens

Description

Single Responsability Principle: les classes CSS ont 1 seul effet
Normalisation: même rendu quelque soit le navigateur
Responsive Design

Layout

Container

classe	Description
container	max-width, contenu centré
container-fluid	width 100%, contenu centré

Grid Layout

<!-- définit une ligne -->
<div class="row">
    <!-- définit 3 colonnes de même taille -->
    <div class="col">...</div>
    <div class="col">...</div>
    <div class="col">...</div>

<div class="row">
    <!-- définit 3 colonnes, la première 2x plus large que les autres. Il y a 12 colonnes (6-3-3) -->
    <div class="col-6">...</div>
    <div class="col">...</div>
    <div class="col">...</div>

<!-- centrer verticalement tous les éléments de la ligne -->
<div class="row align-items-center">
    <!-- centrer verticalement un élément de la ligne -->
    <div class="col align-self-center">...</div>

<!-- centrer horizontalement la ligne -->
<div class="row justify-content-center">

classe	largeur max du conteneur
col- col-auto-	adaptation de la largeur au contenu
col-sm-	540px
col-md-	720px
col-lg-	960px
col-xl-	1140px

Content

Tables

Classes	Description
table	séparateur entre chaque ligne
table-striped	alternance de couleurs pour chaque ligne
table-bordered	bordures autour des cellules
table-hover	colore la ligne survolée par la sourie
table-condensed	table plus petite

Components

Button

btn-primary	btn-secondary	btn-success	btn-danger	btn-warning	btn-info	btn-light	btn-dark	btn-link
bleu	gris	vert	rouge	jaune	cyan	blanc	noir	texte souligné bleu

<a class="btn btn-danger" href="/delete.html">
    <span class="glyphicon glyphicon-trash"></span>
</a>

Alert

<div class="alert alert-danger" role="alert">
  Message d'alerte!
</div>

<div class="alert alert-warning alert-dismissible fade show" role="alert">
  <button type="button" class="close" data-dismiss="alert" aria-label="Close">
    <span aria-hidden="true">&times;</span>
  </button>
  Message d'alerte!
</div>

Modal - popup

<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
  Launch modal
</button>

<div class="modal fade" id="exampleModal">
  <div class="modal-dialog" role="document">
    <div class="modal-content">

      <div class="modal-header">
        <h5 class="modal-title">Modal title</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>

      <div class="modal-body">
        <p>Modal body text goes here.</p>
      </div>

      <div class="modal-footer">
        <button type="button" class="btn btn-primary">Save changes</button>
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
      </div>

    </div>
  </div>
</div>

Blured background

body.modal-open {
    filter: blur(1px);
}

NavBar

<nav class="navbar navbar-inverse">

    <div class="navbar-header">
        <div class="navbar-brand">Navbar</a>

        <button class="navbar-toggler" data-toggle="collapse" data-target="#navbarMenu">
            <span class="navbar-toggler-icon"></span>
        </button>
    </div>

    <div class="collapse navbar-collapse" id="navbarMenu">
        <ul class="nav navbar-nav">  <!-- aligné à gauche -->
            <li><a asp-controller="MyController" asp-action="MyAction1">Link1</a></li>
            <li class="navbar-text">Texte</li>
        </ul>
        <ul class="nav navbar-nav navbar-right">  <!-- aligné à droite -->
            <li><a asp-controller="MyController" asp-action="MyAction2">Link2</a></li>

<nav class="navbar navbar-expand-lg navbar-light bg-light">
    <a class="navbar-brand" href="/">Navbar</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>

    <div class="collapse navbar-collapse" id="navbarSupportedContent">
        <ul class="navbar-nav mr-auto">
        <li class="nav-item active">
            <a class="nav-link" href="/">Home <span class="sr-only">(current)</span></a>
        </li>
        <li class="nav-item">
            <a class="nav-link" href="/link">Link</a>
        </li>
        <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
            Dropdown
            </a>
            <div class="dropdown-menu" aria-labelledby="navbarDropdown">
            <a class="dropdown-item" href="#">Action</a>
            <a class="dropdown-item" href="#">Another action</a>
            <div class="dropdown-divider"></div>
            <a class="dropdown-item" href="#">Something else here</a>
            </div>
        </li>
        <li class="nav-item">
            <a class="nav-link disabled" href="#">Disabled</a>
        </li>
        </ul>
        <form class="form-inline my-2 my-lg-0">
        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
        <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
        </form>
    </div>
</nav>

Navs

<nav id="menu" class="nav nav-pills nav-fill flex-column">
  <a class="nav-item nav-link active" href="#">Active</a>
  <a class="nav-item nav-link" href="#">Link</a>
  <a class="nav-item nav-link" href="#">Link</a>
  <a class="nav-item nav-link disabled" href="#">Disabled</a>
</nav>

#menu {
  width: 200px;
}

Carousel

crossfade: animate slides with a fade transition instead of a slide
data-interval="false": not automatic cycle
data-interval="false": not automatic cycle

Spinner

<div id="spinner" class="text-center">
    <div class="spinner-border text-info" role="status">
        <span class="sr-only">Loading...</span>
    </div>
</div>

$("#spinner").css("display", "none");

Collapse

<a data-toggle="collapse" href="#filter" role="button" aria-expanded="false" aria-controls="filter">
    <i class="fa fa-filter"></i>
</a>

<div class="collapse" id="filter">
</div>

Utilities

Text

classe	Description
text-center	centrer le texte
text-justify	justifier le texte
font-weight-bold	gras
text-uppercase	majuscules
text-truncate	truncate the text with an ellipsis. Requires inline-block or block and width or max-width

Margin / Padding

classe	Description
mt-0	margin-top: 0 !important
mx-auto	margin-right: auto !important margin-left: auto !important
p-3	padding: $spacer !important

Colors

classe	Description
text-primary	blue
text-secondary	grey
text-success	green
text-danger	red
text-warning	yellow
text-info	light blue
bg-transparent	transparent

Flex

classe	Description
d-flex	display: flex
justify-content-around	justify-content: space-around
align-items-baseline	align-items: baseline

Border

classe	Description
border	border: 1px solid white
border-0	border-width: 0px
border-primary	border-color: blue
rounded	border-radius: 0.25rem

Autres

classe	Description
float-left float-right	élément flottant
d-block d-inline d-inline-block	display
w-100 h-50	width: 100%; height: 50%;

Forms

<form>
    <div class="form-group">
        <label asp-for="MyProperty" class="control-label"></label>
        <input asp-for="MyProperty" class="form-control" />
    </div>

    <div class="form-group">
        <input type="submit" value="Save" class="btn btn-default" />
    </div>

Tooltip

<div data-toggle="tooltip" data-placement="top" title="Tooltip text">
  Content text
</div>

Theme

Official paid themes

Bootswatch: Free themes for Bootstrap

Download a theme (bootstrap.min.css) and replace the original bootstrap file
How to customize an existing theme

Installation

Use CDN or download ready-to-use compiled code.
versions

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <!-- option 1: CDN -->
    <link rel="stylesheet"
          href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css"
          integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l"
          crossorigin="anonymous">
    <!-- option 2: file -->
    <link rel="stylesheet" href="css/bootstrap.min.css">

    <title>Hello, world!</title>
  </head>
  <body>
    <h1>Hello, world!</h1>

    <!-- Optional JavaScript -->
    <!-- jQuery first, then bundle of Popper.js and Bootstrap.js -->
    <!-- option 1: CDN -->
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
            integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
            crossorigin="anonymous">
    </script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/js/bootstrap.bundle.min.js"
            integrity="sha384-Piv4xVNRyMGpqkS2by6br4gNJ7DXjqk09RmUpJ8jgGtD7zP9yug3goQfGII0yAns"
            crossorigin="anonymous">
    </script>
    <!-- option 2: files -->
    <script src="js/jquery-3.5.1.slim.min.js"></script>
    <script src="js/bootstrap.bundle.min.js"></script>
  </body>
</html>

Images

<!-- responsive -->
<img src="..." class="img-fluid">