JSFiddle - React, Tailwind, and code Playground

by Christian Sonne

HTML

<div id="a"></div>
<div id="b"></div>

CSS

div {
  height: 200px;
  width: 200px;
  border: 1px red dotted;
  background: var(--bg);
}

#a {
  --bg: red;
}

#b {
  --bg: green;
}