background-image: linear-gradient(to top,#422a4a 0%,#422a4a 50%,#422a4a 100%);
box-shadow:
-10px 0px 10px red, /*左边阴影*/
0px -10px 10px #000, /*上边阴影*/
10px 0px 10px green, /*右边阴影*/
0px 10px 10px blue;" /*下边阴影*/
box-shadow: 2px 4px 6px #422A4A;