diff --git a/index.html b/index.html
index c40ba98..c4a42dd 100644
--- a/index.html
+++ b/index.html
@@ -1,7 +1,7 @@
-<link rel="stylesheet" href="app/editor/static/preview-templates/ccc-devtools/libs/vue-beauty/css/vue-beauty.min.css">
-<link rel="stylesheet" href="app/editor/static/preview-templates/ccc-devtools/libs/element/css/element-ui.css">
-<link rel="stylesheet" href="app/editor/static/preview-templates/ccc-devtools/libs/iview/css/iview.css">
-<link rel="stylesheet" href="app/editor/static/preview-templates/ccc-devtools/css/style.css">
+<link rel="stylesheet" type="text/css" href="app/editor/static/preview-templates/ccc-devtools/libs/vue-beauty/css/vue-beauty.min.css">
+<link rel="stylesheet" type="text/css" href="app/editor/static/preview-templates/ccc-devtools/libs/element/css/element-ui.css">
+<link rel="stylesheet" type="text/css" href="app/editor/static/preview-templates/ccc-devtools/libs/iview/css/iview.css">
+<link rel="stylesheet" type="text/css" href="app/editor/static/preview-templates/ccc-devtools/css/style.css">
 
 <div id="app">
 	<div class="demo-split">