A nicer version of CSS-only 2D background gradient
Compare background of this page with the previous version and enjoy the progress of CSS!
background: linear-gradient( to bottom in hsl, rgba(255,0,255,0.5), rgba(255,255,0,0.5), rgba(0,255,255,0.5), rgba(255,0,255,0.5)), linear-gradient(to right in hsl, #f00, #0f0, #00f);