JSFiddle - React, Tailwind, and code Playground

by mrtoxas

HTML

<div class="block" style="--hidden-counter"></div>
<button onclick="document.querySelector('.block').style='--hidden-counter:10'">Test</button>

CSS

.block:after{
  counter-reset: variable var(--hidden-counter);
  content: 'Скрыто: 'counter(variable); 
}