首页鼠标移上事件

css/index.css

@@ -244,9 +244,11 @@
     width: 25%;
     position: relative;
     top: 0;
+    transition:top 0.6s;
 }
 #support li:hover{
     top: -10px;
+    transition:top 0.6s;
 }
 #support li img {
     display: block;