JSFiddle - React, Tailwind, and code Playground

HTML

<a class="custom">Super Link!</a>

CSS

.custom::before {
    background: url('http://placehold.it/30x30');
    content: "";
    float: left;
    height: 30px;
    margin-right: 5px;
    width: 30px;
}
.custom {
    line-height: 30px;
}