JSFiddle - React, Tailwind, and code Playground

HTML

<div class="description custom">
   <a class="description_help_text" href="">
     <img src="http://jsfiddle.net/img/logo.png">
     <span>Bla bla bla.</span>
   </a>
</div>

CSS

.description_help_text span {
    display: none;
}

.description_help_text:hover span {
    display: block;
}