JSFiddle - React, Tailwind, and code Playground

HTML

<div> Doesn't work in Firefox <span></span></div>

CSS

body {
    padding: 40px;
}
div {
    display: table-cell;
    line-height: 28px;
    padding: 0 20px;
    background: #ddd;
    position: relative;
}

span {
    background: #444;
    width: 1px;
    position: absolute;
    top: 5px;
    bottom: 5px;
    left: 10px;
}