CSS3 Gradient - the CSS Code looks like this :
  /* For WebKit (Safari, Google Chrome etc) */
    background-image: -webkit-gradient(linear, left top, left bottom,
        color-stop( 14.83957219251337%, rgba(255,255,255,0.7593582887700535)),
        color-stop( 91.36363636363636%, rgba(69,69,70,1)));
  /* For Mozilla/Gecko (Firefox etc) */
    background-image: -moz-linear-gradient(top,
        rgba(255,255,255,0.7593582887700535) 14.83957219251337%,
        rgba(69,69,70,1) 91.36363636363636%);
  * Mozilla option will not be displayed in the Widget Browser