Not really sure why the sticky footer isn't working in Bootstrap 4. I have a TYPO3 website which I am a beginner at.
The sticky footer is not sticking at the bottom of the page.
Here is a copy of the page source as it has been rendered.
I basically copied the html file from bootstraps docs folder and then modified it and copied it into my TYPO3 template.
If I fill the page with content, the footer does not stick - I have to scroll the page down to see it.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Landing Page</title>
<meta name="generator" content="TYPO3 CMS">
<link rel="stylesheet" type="text/css"
href="/typo3temp/assets/css/d42b6e1bdf.css?1507853162" media="all">
<link rel="stylesheet" type="text/css"
href="/fileadmin/templates/landing_page/css/bootstrap.min.css?1507860230"
media="all">
<link rel="stylesheet" type="text/css"
href="/fileadmin/templates/landing_page/css/sticky-footer.css?1507861966"
media="all">
<script
src="/fileadmin/templates/landing_page/js/jquery-3.2.1.min.js?1507862465"
type="text/javascript"></script>
<script
src="/fileadmin/templates/landing_page/js/tether.min.js?1507862602"
type="text/javascript"></script>
<script
src="/fileadmin/templates/landing_page/js/bootstrap.min.js?1507854311"
type="text/javascript"></script>
</head>
<body>
<div class="container">
<div class="mt-1">
<h1>Sticky footer</h1>
</div>
<p class="lead">Pin a fixed-height footer to the bottom of the
viewport in desktop browsers with this custom HTML and CSS.</p>
<p>
Use <a href="../sticky-footer-navbar">the sticky footer with a
fixed navbar</a> if need be, too.
</p>
<div class="row">
<div class="col">1 of 3</div>
<div class="col">1 of 3</div>
<div class="col">1 of 3</div>
</div>
</div>
<footer class="footer">
<div class="container">
<span class="text-muted">Place sticky footer content here.</span>
</div>
</footer>
</body>
</html>Managed to figure it out. Maybe I have a misunderstanding on what "Sticky" is or something, but the solution was to change absolute -> fixed in the css file.
e.g. from:
.footer {
position: absolute;
bottom: 0;
width: 100%;
/* Set the fixed height of the footer here */
height: 60px;
line-height: 60px; /* Vertically center the text there */
background-color: #f5f5f5;
}
to:
.footer {
position: fixed;
bottom: 0;
width: 100%;
/* Set the fixed height of the footer here */
height: 60px;
line-height: 60px; /* Vertically center the text there */
background-color: #f5f5f5;
}
Update 2018 - Bootstrap 4.0.0
Now that Bootstrap 4.0 is flexbox, it's easier to use flexbox for the sticky footer.
<div class="d-flex flex-column sticky-footer-wrapper">
<nav>
</nav>
<main class="flex-fill">
</main>
<footer>
</footer>
</div>
body, .sticky-footer-wrapper {
min-height:100vh;
}
.flex-fill {
flex:1 1 auto;
}
Demo: Bootstrap 4 Sticky Footer (4.0.0)
Note: The flex-fill utility class will be included in the next Bootstrap 4.1 release. So after that release the extra CSS for flex-fill won't be needed.
Also see: Bootstrap 4 - Sticky footer - Dynamic footer height
The example in the Bootstrap 4 docs has the following CSS:
/* Sticky footer styles
-------------------------------------------------- */
html {
position: relative;
min-height: 100%;
}
body {
margin-bottom: 60px; /* Margin bottom by footer height */
}
.footer {
position: absolute;
bottom: 0;
width: 100%;
height: 60px; /* Set the fixed height of the footer here */
line-height: 60px; /* Vertically center the text there */
background-color: #f5f5f5;
}
You've probably forgotten to set html { position: relative; min-height: 100%; } - I know I usually forget that part.
In Bootstrap 4, use the fixed-bottom class to stick your footer. No custom CSS needed:
<footer class="footer fixed-bottom">
...
</footer>
<html class="h-100">
.
.
</html>
This should solve the problem. It is similar to Benjineer's answer but ready bootstrap class. Tested with Bootstrap 4.3.1
来源：https://stackoverflow.com/questions/46722697/bootstrap-4-sticky-footer-not-sticking