moving gradient background css code example

Example 1: Css gradient animations

Here a codePen with cool animations:
https://codepen.io/DevLorenzo/pen/ExgpvJM

Example 2: html css background linear-gradient

background: linear-gradient(#333, #333 50%, #eee 100%);
\\code for a basic gradient background
   #grad {
  background-image: linear-gradient(red, yellow);
}