JSFiddle - React, Tailwind, and code Playground

by queryj

HTML

<div>
Note that in css, # is escaped with back slash.
</div>
<div class="#hash">
try css escape selector
</div>

CSS

.\#hash{
  width: 5em;
  height: 5em;
  border: 1px solid red;
  background-color: yellow;
}