There is no built-in component for creating the fixed/sticky or simple footer like forms, buttons, tooltips, popovers, etc. However, by using a few CSS styles/properties you may create a fixed or static footer easily.
You may include other components in the footer with a few lines of code.
In this article, I am going to show you a few footer templates based on Bootstrap 4 framework that you may use in your Bootstrap projects.
An example of a fixed/sticky footer
You simply need to use the <footer> tag after all other content where you require to refer the .footer class shown below. It will create a sticky footer that remains fixed even vertical scroll bar appears.

The style for the footer:
<style>
.footer {
position: fixed;
bottom: 0;
width: 100%;
height: 55px;
background-color: #DFDFDF;
}
</style>
The markup used for the footer:
<footer class="footer">
<div class="container">
<p>© Company Name | Privacy Policy | Terms of Service</p>
</div>
</footer>
In the CSS code, you can see the position is used as fixed. That makes the footer fixed as you scroll down the page.
Tweaking a little for centered text and linear background
This sticky footer is centered text and uses padding for lowering the text along with changing the background a bit. For that, a linear background is added along with other properties to stand out in the fixed footer. Have a look:

Only this style is changed than the above example:
<style>
.footer {
position: fixed;
height: 55px;
bottom: 0;
color:#fff;
padding-top:20px;
width: 100%;
background: #00003E;
background: -webkit-linear-gradient(to right, #31BDE6, #00003E);
background: linear-gradient(to right, #31BDE6, #00003E);
text-align:center;
}
</style>
A large size static footer example
You may use this large footer menu in Bootstrap if the footer is supposed to contain many links. For example, for services like hosting, an e-commerce store or any other website, the footer may require presenting a good number of link or information that goes across the site. Have a look at the demo and code of CSS and HTML:

Complete code including custom CSS:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
<style>
.full {
width: 100%;
}
.footer {
height: auto;
padding-bottom: 30px;
position: relative;
width: 100%;
color:#fff;
border-bottom: 1px solid #CCCCCC;
border-top: 1px solid #DDDDDD;
background: #00003E;
background: -webkit-linear-gradient(to right, #31BDE6, #00003E);
background: linear-gradient(to right, #31BDE6, #00003E);
}
.footer h3 {
border-bottom: 1px solid #BAC1C8;
color:#fff;
font-size: 18px;
font-weight: 600;
line-height: 27px;
padding: 40px 0 10px;
text-transform: uppercase;
}
.footer ul {
font-size: 13px;
list-style-type: none;
margin-left: 0;
padding-left: 0;
margin-top: 15px;
color: #7F8C8D;
}
.footer ul li a {
padding: 0 0 5px 0;
display: block;
}
.footer a {
color: #78828D;
color:#fff;
}
.supportLi h4 {
font-size: 20px;
font-weight: lighter;
line-height: normal;
margin-bottom: 0 !important;
padding-bottom: 0;
}
.subscribe-btn .btn {
border: medium none;
border-radius: 4px;
display: inline-block;
height: 40px;
padding: 0;
width: 100%;
color: #fff;
margin-top:10px;
}
.subscribe-btn {
overflow: hidden;
}
.social li {
border: 2px solid #B5B5B5;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
-o-border-radius: 50%;
-ms-border-radius: 50%;
border-radius: 50%;
float: left;
height: 36px;
line-height: 36px;
margin: 0 8px 0 0;
padding: 0;
text-align: center;
width: 36px;
transition: all 0.5s ease 0s;
-moz-transition: all 0.5s ease 0s;
-webkit-transition: all 0.5s ease 0s;
-ms-transition: all 0.5s ease 0s;
-o-transition: all 0.5s ease 0s;
}
.social li a {
color: #EDEFF1;
}
.social li:hover {
border: 2px solid #2c3e50;
background: #2c3e50;
}
.social li a i {
font-size: 16px;
margin: 0 0 0 5px;
color: #EDEFF1 !important;
}
.footer-bottom {
background: #40E0D0;
background: -webkit-linear-gradient(to right, #FF0080, #FF8C00, #40E0D0);
background: linear-gradient(to right, #FF0080, #FF8C00, #40E0D0);
border-top: 1px solid #DDDDDD;
padding-top: 20px;
padding-bottom: 40px;
color:#fff;
}
.footer-bottom p.pull-left {
padding-top: 6px;
}
.payments {
font-size: 1.5em;
}
</style>
</head>
<body>
<div class="container">
<h3>A Demo of sticket footer</h3>
<div class="card">
<div class="card-header">
Featured
</div>
<div class="card-block">
<h4 class="card-title">Special title treatment</h4>
<p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
<a href="#" class="btn btn-primary">Go somewhere</a>
</div>
</div>
<div class="card">
<div class="card-header">
Featured
</div>
<div class="card-block">
<h4 class="card-title">Special title treatment</h4>
<p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
<a href="#" class="btn btn-primary">Go somewhere</a>
</div>
</div>
<div class="card">
<div class="card-header">
Featured
</div>
<div class="card-block">
<h4 class="card-title">Special title treatment</h4>
<p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
<a href="#" class="btn btn-primary">Go somewhere</a>
</div>
</div>
<br /><br /><br /><br />
<footer>
<div class="footer" id="footer">
<div class="container">
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-6">
<h3> Specials</h3>
<ul>
<li> <a href="#"> Product 1</a> </li>
<li> <a href="#"> Product 1 </a> </li>
<li> <a href="#"> Product 3 </a> </li>
<li> <a href="#"> Product 4 </a> </li>
<li> <a href="#"> Product 5 </a> </li>
</ul>
</div>
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-6">
<h3> Services </h3>
<ul>
<li> <a href="#"> Services 1 </a> </li>
<li> <a href="#"> Services 2 </a> </li>
<li> <a href="#"> Services 3 </a> </li>
<li> <a href="#"> Services 4 </a> </li>
<li> <a href="#"> Services 5 </a> </li>
</ul>
</div>
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-6">
<h3> About </h3>
<ul>
<li> <a href="#"> Our Company </a> </li>
<li> <a href="#"> About Us </a> </li>
<li> <a href="#"> Terms of Services </a> </li>
<li> <a href="#"> Our Team </a> </li>
</ul>
</div>
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-6">
<h3> Contact </h3>
<ul>
<li> <a href="#"> Contact Marketing </a> </li>
<li> <a href="#"> Contact Sales </a> </li>
<li> <a href="#"> Contact HR </a> </li>
<li> <a href="#"> Contact Admin </a> </li>
</ul>
</div>
<div class="col-lg-3 col-md-3 col-sm-6 col-xs-12 ">
<h3> Subscribe Us </h3>
<ul>
<li>
<div class="input-append subscribe-btn text-center">
<input type="text" class="full text-center" placeholder="Email ">
<button class="btn btn-success" type="button"> Subscribe <i class="fa fa-save"> </i> </button>
</div>
</li>
</ul>
<ul class="social">
<li> <a href="#"> <i class=" fa fa-facebook"> </i> </a> </li>
<li> <a href="#"> <i class="fa fa-twitter"> </i> </a> </li>
<li> <a href="#"> <i class="fa fa-google-plus"> </i> </a> </li>
<li> <a href="#"> <i class="fa fa-pinterest"> </i> </a> </li>
<li> <a href="#"> <i class="fa fa-youtube"> </i> </a> </li>
</ul>
</div>
</div>
<!--/.row-->
</div>
<!--/.container-->
</div>
<!--/.footer-->
<div class="footer-bottom">
<div class="container">
<p class="pull-left"> Copyright � 2004-2018. All rights reserved. </p>
<div class="pull-right">
<ul class="nav nav-pills payments">
<li>We Accept: </li>
<li><i class="fa fa-cc-paypal"></i></li>
<li><i class="fa fa-cc-mastercard"></i></li>
<li><i class="fa fa-cc-amex"></i></li>
<li><i class="fa fa-cc-visa"></i></li>
</ul>
</div>
</div>
</div>
<!--/.footer-bottom-->
</footer>
</div>
</body>
</html>
Large footer style number 2
The markup and most of the CSS are the same for this footer template as in the above example. I just changed the linear background colors for both footer classes along with the button style, payment option icon size, etc. Have a look:

The CSS:
.footer {
height: auto;
padding-bottom: 30px;
position: relative;
width: 100%;
color:#fff;
border-bottom: 1px solid #CCCCCC;
border-top: 1px solid #DDDDDD;
background: #182765;
background: -webkit-linear-gradient(to right, #FDBD37, #B92020, #182765);
background: linear-gradient(to right, #FDBD37, #B92020, #182765);
}
And
.footer-bottom {
background: #d9a7c7;
background: -webkit-linear-gradient(to right, #fffcdc, #d9a7c7);
background: linear-gradient(to right, #fffcdc, #d9a7c7);
border-top: 1px solid #DDDDDD;
padding-top: 20px;
padding-bottom: 40px;
color:#000;
}