JSFiddle - React, Tailwind, and code Playground

by Cthulhu

HTML

<div id="one"> 1 </div>
<div id="two"> 2 </div>
<div id="three"> 3 </div>

CSS

div {
    float: left;
    height: 100px;
    position: relative;
    width: 100px;
}
div::after {
    content: "";
    height: 100%;
    position: absolute;
    width: 100%;
}
#one, #one::after { background: goldenrod; }
#two { background: seagreen none repeat scroll 0 0; }
#three { background: salmon none repeat scroll 0 0; }