JSFiddle - React, Tailwind, and code Playground

HTML

<div id="text">test</div>

CSS

#text {
    display: inline-block;
    font-size: 70px;
    border: 1px solid red;
    line-height: 1;
    position: relative;
}

#text:after {
    position: absolute;
    content: "<=== This wee gap here";
    font-size: 12px;
    width: 300px;
    left: 60px;
    top: 0;
}