diff --git a/client/components/App.vue b/client/components/App.vue
index ea3bb82a..1b48cad2 100644
--- a/client/components/App.vue
+++ b/client/components/App.vue
@@ -268,6 +268,7 @@ body, html, #app {
     padding: 0 !important;
     display: flex;
     flex-direction: column;
+    overflow: hidden;
 }
 
 @font-face {
diff --git a/client/components/Reader/HelpPage/HelpPage.vue b/client/components/Reader/HelpPage/HelpPage.vue
index 24eb3cd6..f4421c75 100644
--- a/client/components/Reader/HelpPage/HelpPage.vue
+++ b/client/components/Reader/HelpPage/HelpPage.vue
@@ -82,10 +82,12 @@ class HelpPage extends Vue {
     flex: 1;
     display: flex;
     flex-direction: column;
+    overflow: hidden;
 }
 
 .el-tab-pane {
     flex: 1;
     display: flex;
+    overflow: hidden;
 }
 </style>