Bootstrap 4

Liens

• Thèmes officiels
• Bootswatch: Free themes for Bootstrap
• Bootstrap 4 Utilities
• Bootstrap Vertical Navigation with expand and collapse
• Font Awesome

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

Une page est divisé en 12 colonnes.

<!-- 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

<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>

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; }

Utilities

Text

classe	Description
text-center	centrer le texte
text-justify	justifier le texte
font-weight-bold	gras
text-uppercase	majuscules

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

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>

Installation

Use CDN or download bootstrap.

<!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">