Bootstrap 5 Beta 3 (update 2021)
There is now an offical Bootstrap 5 Offcanvas Component that makes creating sidebars much easier.
Of course it can still be done without using the Offcanvas component like this sidebar example for Bootstrap 5
Bootstrap 4 (original answer)
Sidebar navs can be very complex. This may be why Bootstrap doesn’t have an “out-of- the-box” component. There are many considerations for Sidebars:
- Responsive – different width, visibility or orientation based on screen width?
- Multi-level – do the nav items have sub levels? How will this impact height?
- Toggleable – can the sidebar be toggled by a button or “hamburger”?
- Push vs. Overlay – is page content hidden behind or next to the sidebar?
- Left or right – is the sidebar to the left or right of page content?
- Fixed or sticky – how is the sidebar positioned on page scroll?
- Animation style – slide left/right/up/down?, collapse?
In this “sidebar” case… instead of using col-auto on the right column, use col. That way it will fill the width when the menu is collapsed: https://jsfiddle.net/0rhyzu7o/
<div class="container-fluid h-100">
<div class="row h-100">
<div class="col-5 col-md-3 collapse width m-0 p-0 h-100 bg-dark" id="collapseExample">
..
</div>
<div class="col">
<div class="row">
<div class="col-12">
<button class="btn sticky-top" data-toggle="collapse" href="#collapseExample" role="button">
Menu
</button>
</div>
<div class="col-12">
..
</div>
</div>
</div>
</div>
</div>
To make the animation a little smoother, you must override Bootstrap’s collapsing transition which normally works on height
EDIT:
Based on the bounty request, I updated the sidebar with 2 more examples. These are closer to the example, and mostly use Bootstrap classes.
Minimal version
This version is closer to the example, and has the same slide left/right “drawer” animation.
body {
height: 100vh;
overflow-x: hidden;
padding-top: 56px;
}
.vh-100 {
min-height: 100vh;
}
.sidebar.collapse.show,
.sidebar.collapse.show + .col {
transition: .18s ease;
transform: translate(0,0,0);
left: 0;
}
.sidebar.collapse,
.sidebar.collapsing,
.sidebar.collapsing + .col {
transition: .18s ease;
transform: translate(-25%,0,0);
z-index: 1050;
left: -25%;
}
Demo minimal version: https://codeply.com/go/w1AMD1EY3c
Full version (very close to the example):
This sidebar features:
- fixed-width
- automatically closes on smaller screens, opens on wider screens
- can be toggled open/closed at any width
- responsive – becomes a fixed overlay on smaller widths
This full version does require a little more CSS, but some of it is optional…
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<style>
body {
height: 100vh;
overflow-x: hidden;
padding-top: 55px;
}
/* set the sidebar width */
.w-sidebar {
width: 200px;
max-width: 200px;
}
.row.collapse {
margin-left: -200px;
left: 0;
transition: margin-left .15s linear;
}
.row.collapse.show {
margin-left: 0 !important;
}
.row.collapsing {
margin-left: -200px;
left: -0.05%;
transition: all .15s linear;
}
/* optional */
.vh-100 {
min-height: 100vh;
}
/* optional for overlay sidebar on small screens */
@media (max-width:768px) {
.row.collapse,
.row.collapsing {
margin-left: 0 !important;
left: 0 !important;
overflow: visible;
}
.row > .sidebar.collapse {
display: flex !important;
margin-left: -100% !important;
transition: all .3s linear;
position: fixed;
z-index: 1050;
max-width: 0;
min-width: 0;
flex-basis: auto;
}
.row > .sidebar.collapse.show {
margin-left: 0 !important;
width: 100%;
max-width: 100%;
min-width: initial;
}
.row > .sidebar.collapsing {
display: flex !important;
margin-left: -10% !important;
transition: all .2s linear !important;
position: fixed;
z-index: 1050;
min-width: initial;
}
}
</style>
<div class="container-fluid fixed-top bg-dark py-3">
<div class="row collapse show no-gutters d-flex h-100 position-relative">
<div class="col-3 px-0 w-sidebar navbar-collapse collapse d-none d-md-flex">
<!-- spacer col -->
</div>
<div class="col px-2 px-md-0">
<!-- toggler -->
<a data-toggle="collapse" href="#" data-target=".collapse" role="button" class="p-1">
<i class="fa fa-bars fa-lg"></i>
</a>
</div>
</div>
</div>
<div class="container-fluid px-0 h-100">
<div class="row vh-100 collapse show no-gutters d-flex h-100 position-relative">
<div class="col-3 p-0 vh-100 h-100 w-sidebar navbar-collapse collapse d-none d-md-flex sidebar">
<!-- fixed sidebar -->
<div class="position-fixed bg-dark text-white h-100 w-sidebar pl-2">
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</div>
<div class="col p-3">
<h3>Content..</h3>
<p class="lead">Try this is full-page view to see the animation on larger screens!</p>
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</div>
</div>
</div>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>Demo full version: https://codeply.com/go/XJE8LOdX8k
Both the minimal and robust examples are much closer to the original example. It’s easy to change color and tweak the styles. Here’s another variation with the sidebar overlaying the toggle bar at the top.