add 头像xuan

src/assets/main.css

@@ -116,6 +116,10 @@ a {
     text-align: center;
     transition: all .3s;
 }
+/* 鼠标进入后旋转180度，类开后恢复 */
+.avatar:hover {
+    transform: rotate(720deg);
+}
 
 .main {
     width: 0;