/* gradients not yet supported */
.not_yet_supported_gradients {
    /* "to" keyword */
    background-image: linear-gradient(to right, #333, #CCC);
    /* non-prefixed radial-gradient() */
    background-image: radial-gradient(yellow, green); 
    /* repeating-linear-gradient() */
    background-image: repeating-linear-gradient(red, blue 20px, red 40px);
    background-image: repeating-linear-gradient(red 0px, white 0px, blue 0px);
    background-image: repeating-linear-gradient(red 0px, white .1px, blue .2px);
    /* repeating-radial-gradient() */
    background-image: repeating-radial-gradient(circle closest-side at 20px 30px, red, yellow, green 100%, yellow 150%, red 200%);
    background-image: repeating-radial-gradient(red, blue 20px, red 40px);
}