gistfile1.css

@mixin gradient($color1, $color2){
  background: $color2;
  background:-webkit-gradient(
      linear,
      left bottom,
      left top,
      color-stop(0, $color1),
      color-stop(1, $color2)
  );
  background:-moz-linear-gradient(
      center bottom,
      $color1 0%,
      $color2 100%
  );
}