JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <span>tst</span>
  <span>test</span>
</div>

CSS

div {
    display: block;
    font-size: 10em;
}

span {
    display: inline;
    margin-right: -4px;
    background: green;
    color: white;
}