新式写法从左向右渐变:
background-image: -webkit-linear-gradient(left, #f13fd0, #0ca4fd);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
老式写法从上向下渐变:
background-image: -webkit-gradient(linear, 0 0, 0 bottom, from(#f13fd0), to(#0ca4fd));
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;