重构slide切换

@@ -15,6 +15,11 @@
             height: 400px;
             height: 400px;
             display: block;
             display: block;
             border-left: 5px solid #fff;
             border-left: 5px solid #fff;
+            img{
+                display: block;
+                width: 650px;
+                height: 400px;
+            }
         }
         }
 }
 }