JSFiddle - React, Tailwind, and code Playground

HTML

<div>1</div>

CSS

div {
  background: linear-gradient( 45deg, blue, red );
  //background: linear-gradient( to left top, blue, red);      
  //background: linear-gradient( 0deg, blue, green 40%, red);
}

div {width: 200px; height: 200px;}