JSFiddle - React, Tailwind, and code Playground

HTML

<div class='email-button'></div>

CSS

.email-button {
    background-image: url('http://webbiquity.com/wp-content/uploads/2011/02/Email-Icon.jpg');
    background-size:30px 30px;
    width:30px;
    height:30px;
    
    cursor: pointer;
}