Radial Gradients (Circle gradient)
-webkit-radial-gradient(circle, white, black);
-webkit-radial-gradient(center, 20px 20px, white, black);
-webkit-repeating-radial-gradient(left, red 10%, green 20%, blue 30%);
-webkit-repeating-radial-gradient(black, black 5px, white 5px, white 10px);
-webkit-repeating-linear-gradient(top left, red, red 5px, white 5px, white 10px);
-webkit-repeating-linear-gradient(-5px -5px, circle, #bfeeff, #bfeeff 15px, #fff 15px, #fff 30px, #bfeeff 30px, #bfeeff 40px);