Bootstrap 4

De Banane Atomic
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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

Une page est divisé en 12 colonnes.
Html.svg
<!-- 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
Html.svg
<a class="btn btn-danger" href="/delete.html">
    <span class="glyphicon glyphicon-trash"></span>
</a>

Alert

Html.svg
<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

Html.svg
<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

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

NavBar

Html.svg
<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>
Html.svg
<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

Html.svg
<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>
Css.svg
#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

Html.svg
<div id="spinner" class="text-center">
    <div class="spinner-border text-info" role="status">
        <span class="sr-only">Loading...</span>
    </div>
</div>
Javascript.svg
$("#spinner").css("display", "none");

Collapse

Html.svg
<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
Values from 0 to 5

1=0.25rem 2=0.5rem 3=1rem 4=1.5rem 5=3rem

$spacer = 1rem, rem = root em = font-size defined in <html>

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

Html.svg
<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

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

Theme

Bootswatch: Free themes for Bootstrap

Installation

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

Html.svg
<!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

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