JSFiddle - React, Tailwind, and code Playground

by rga4

CSS

body {
  background-color: #000; /* цвет фона, например, чёрный */
  background-image:
    linear-gradient(to right, white 1px, transparent 1px),
    linear-gradient(to bottom, white 1px, transparent 1px);
  background-size: 30px 30px;
}