Bootstrap 4 Sticky Footer Not Sticking

问题

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>

回答1:

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;
}

回答2:

Update 2019 - Bootstrap 4.3+

Now that Bootstrap 4 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

回答3:

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.

回答4:

In Bootstrap 4, use the fixed-bottom class to stick your footer. No custom CSS needed:

<footer class="footer fixed-bottom">
    ...
</footer>

回答5:

<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

回答6:

if you use

<footer class="footer fixed-bottom">
    ...
</footer>

remember to add

html {
    padding-bottom: greater than your footer;
}

to the CSS to avoid blocking some content at the bottom your page

来源：https://stackoverflow.com/questions/46722697/bootstrap-4-sticky-footer-not-sticking

标签

html

css

typo3

bootstrap-4

sticky-footer