CSS3----background:-webkit-gradient()渐变效果

 input[type="button"], input[type="button"]:visited {
             background: -webkit-gradient(linear, 0% 0, 0% 100%, from(#0faf0f), to(#008001));
         }

 input[type="button"]:hover, input[type="button"]:active {
                 background: -webkit-gradient(linear, 0% 0, 0% 100%, from(#005801), to(#008001));
             }

background: -webkit-gradient();