JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#">Search</a>

CSS

a {
    text-indent: -9999px;                 /* sends the text off-screen */
    white-space: nowrap;  
    outline: none;
    
    display: inline-block;
    width: 17px;
    height: 16px;
    background: url(http://i.stack.imgur.com/5c3zk.png);
    background-color:red;
}