JSFiddle - React, Tailwind, and code Playground

by Vitaliy

HTML

<div class="age"><span>18+</span></div>

CSS

.age{
  width:4em;
  height:4em;
  border-radius:50%;
  border:.5em solid #f00;
  background:#fff;
  color:#f00;
  text-align:center;
  line-height:4em;
  font-weight:bold;
  font-family:Arial;
}
span{
  font-size:2em;
}