JSFiddle - React, Tailwind, and code Playground

by Mustafa Oeztuerk

HTML

<div id="background"></div>

CSS

#background { 
    position:absolute; 
    top:0; 
    left:0; 
    width:100%; 
    height:100%; 
    background:blue;
}
#background:hover { opacity:0.3; background:red;}
#content { position:relative; z-index:10; }