JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>
test

CSS

div {
    width: 100px;
    height: 100px;
    background: #eee;
    box-sizing:border-box;
    -webkit-box-sizing:border-box;
}
div:hover {
    width: 100px;
    height: 100px;
    background: #eee;
    border-bottom: 1px solid;

}