diff --git a/admin/src/App.vue b/admin/src/App.vue
index 7ec9c6f..e0f9b6a 100644
--- a/admin/src/App.vue
+++ b/admin/src/App.vue
@@ -1,5 +1,5 @@
 <template>
-  <div id="app" class="app" :style="appStyle"
+  <div id="app" class="app outer" :style="appStyle"
        @touchstart="touchStart"
        @touchmove="touchMove"
        @touchend="touchEnd">
@@ -233,6 +233,39 @@
       }
     },
     mounted() {
+      {
+        var overscroll = function (el) {
+          el.addEventListener('touchstart', function () {
+            var top = el.scrollTop
+              , totalScroll = el.scrollHeight
+              , currentScroll = top + el.offsetHeight
+            //If we're at the top or the bottom of the containers
+            //scroll, push up or down one pixel.
+            //
+            //this prevents the scroll from "passing through" to
+            //the body.
+            if (top === 0) {
+              el.scrollTop = 1
+            } else if (currentScroll === totalScroll) {
+              el.scrollTop = top - 1
+            }
+          })
+          el.addEventListener('touchmove', function (evt) {
+            //if the content is actually scrollable, i.e. the content is long enough
+            //that scrolling can occur
+            if (el.offsetHeight < el.scrollHeight)
+              evt._isScroller = true
+          })
+        }
+        overscroll(document.querySelector('.outer'));
+        document.body.addEventListener('touchmove', function (evt) {
+          //In this case, the default behavior is scrolling the body, which
+          //would result in an overflow.  Since we don't want that, we preventDefault.
+          if (!evt._isScroller) {
+            evt.preventDefault()
+          }
+        })
+      }
       //初始化
       this.init();
     },