How to position footer at bottom in Bootstrap?
In order for this element position at the bottom of the page, you have to add fixed-bottom to the class footer.
<footer class="bg-info text-center text-lg-start fixed-bottom">
<!-- Grid container -->
<div class="container p-4">
<!--Grid row-->
<div class="row">
<!--Grid column-->
<div class="col-lg-3 col-md-6 mb-4 mb-md-0">
<h5 class="text-uppercase">Links</h5>
<ul class="list-unstyled mb-0">
<li>
<a href="#!" class="text-dark">Link 1</a>
</li>
<li>
<a href="#!" class="text-dark">Link 2</a>
</li>
<li>
<a href="#!" class="text-dark">Link 3</a>
</li>
<li>
<a href="#!" class="text-dark">Link 4</a>
</li>
</ul>
</div>
<!--Grid column-->
<!--Grid column-->
<div class="col-lg-3 col-md-6 mb-4 mb-md-0">
<h5 class="text-uppercase mb-0">Links</h5>
<ul class="list-unstyled">
<li>
<a href="#!" class="text-dark">Link 1</a>
</li>
<li>
<a href="#!" class="text-dark">Link 2</a>
</li>
<li>
<a href="#!" class="text-dark">Link 3</a>
</li>
<li>
<a href="#!" class="text-dark">Link 4</a>
</li>
</ul>
</div>
<!--Grid column-->
<!--Grid column-->
<div class="col-lg-3 col-md-6 mb-4 mb-md-0">
<h5 class="text-uppercase">Links</h5>
<ul class="list-unstyled mb-0">
<li>
<a href="#!" class="text-dark">Link 1</a>
</li>
<li>
<a href="#!" class="text-dark">Link 2</a>
</li>
<li>
<a href="#!" class="text-dark">Link 3</a>
</li>
<li>
<a href="#!" class="text-dark">Link 4</a>
</li>
</ul>
</div>
<!--Grid column-->
<!--Grid column-->
<div class="col-lg-3 col-md-6 mb-4 mb-md-0">
<h5 class="text-uppercase mb-0">Links</h5>
<ul class="list-unstyled">
<li>
<a href="#!" class="text-dark">Link 1</a>
</li>
<li>
<a href="#!" class="text-dark">Link 2</a>
</li>
<li>
<a href="#!" class="text-dark">Link 3</a>
</li>
<li>
<a href="#!" class="text-dark">Link 4</a>
</li>
</ul>
</div>
<!--Grid column-->
</div>
<!--Grid row-->
</div>
<!-- Grid container -->
<!-- Copyright -->
<div class="text-center p-3" style="background-color: rgba(0, 0, 0, 0.2);">
© 2020 Copyright:
<a class="text-dark" href="https://mdbootstrap.com/">MDBootstrap.com</a>
</div>
<!-- Copyright -->
</footer>