JSFiddle - React, Tailwind, and code Playground

HTML

<main>
  <div>
    <span>1234567890 1234</span>
  </div>
</main>

CSS

* {
  box-sizing: border-box
}

html,
body {
  height: 100%;
  padding: 0;
  margin: 0;
}

main {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: red;
  padding: 10px;
}

span {
  background: green;
}