css线性渐变及兼容

1,从左到右的渐变


    background: -webkit-linear-gradient(left, #EE1313, #FF654C);
    background: -o-linear-gradient(left, #EE1313, #FF654C);
    background: -moz-linear-gradient(left, #EE1313, #FF654C);
    background: linear-gradient(left, #EE1313, #FF654C);

2,从上到下的渐变  

    #grad {background: -webkit-linear-gradient(red, blue); /* Safari 5.1 - 6.0 */
    background: -o-linear-gradient(red, blue); /* Opera 11.1 - 12.0 */
    background: -moz-linear-gradient(red, blue); /* Firefox 3.6 - 15 */
    background: linear-gradient(red, blue); /* 标准的语法 */}