JSFiddle - React, Tailwind, and code Playground

by batcave

HTML

<div class="block"></div>

CSS

.block {
  width: 10rem;
  height: 10rem;
  background:
    linear-gradient(0deg, rgba(34, 34, 34, 0.05), rgba(34, 34, 34, 0.05)),
    linear-gradient(0deg, #000000, #000000);
}