CODE EXAMPLE FOR CSS

background images in CSS

background-image:
  linear-gradient(to bottom, rgba(255,255,0,0.5), rgba(0,0,255,0.5)),
  url('catfront.png');

/* Global values */
background-image: inherit;
background-image: initial;
background-image: revert;
background-image: revert-layer;
background-image: unset;