gradient

Linear Gradient - Top to Bottom
  background: -webkit-linear-gradient(red, blue); /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(red, blue); /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(red, blue); /* For Firefox 3.6 to 15 */
  background: linear-gradient(red, blue); /* Standard syntax */



 Linear Gradient - Left to Right
 background: -webkit-linear-gradient(left, red , blue); /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(right, red, blue); /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(right, red, blue); /* For Firefox 3.6 to 15 */
  background: linear-gradient(to right, red , blue); /* Standard syntax */


 Linear Gradient - Diagonal
 background: -webkit-linear-gradient(left top, red , blue); /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(bottom right, red, blue); /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(bottom right, red, blue); /* For Firefox 3.6 to 15 */
  background: linear-gradient(to bottom right, red , blue); /* Standard syntax */