footer.php

<div class="footer">
    <div class="row">
        <div class="container">
            <div class="col-md-4 intro">
                
                <h3>Online Retail Store</h3><br>
                <span class="fa-stack fa-2x">
                    <i class="fa fa-twitter fa-stack-1x"></i>
                    <i class="fa fa-square-o fa-stack-2x"></i>
                </span>
                <span class="fa-stack fa-2x">
                    <i class="fa fa-github fa-stack-1x"></i>
                    <i class="fa fa-square-o fa-stack-2x"></i>
                </span>
                <span class="fa-stack fa-2x">
                    <i class="fa fa-twitter fa-stack-1x"></i>
                    <i class="fa fa-square-o fa-stack-2x"></i>
                </span>
                <span class="fa-stack fa-2x">
                    <i class="fa fa-instagram fa-stack-1x"></i>
                    <i class="fa fa-square-o fa-stack-2x"></i>
                </span>
            </div>
    
            <div class="col-md-4 contact-us">
                <h3>Contact Us</h3><br>
                <h4><a href="mailto:panchamkhaitan@outlook.com">Mail to Pancham Khaitan</h4></a>
            </div>
    
            <div class="col-md-4 developed">
                <h3>Developer</h3><br>
                <span>Made with <i class="fa fa-heart" aria-hidden="true"></i> by Pancham Khaitan.</span>
            </div>
        </div>
    </div>
</div>