diff --git a/src/App.css b/src/App.css
index 8d916d39..55bdd7f4 100644
--- a/src/App.css
+++ b/src/App.css
@@ -93,6 +93,9 @@ body {
 .editormd-preview .markdown-body{
   padding:0px !important;
 }
+.editormd-preview{
+  width: 50%!important;
+}
 
 /* 图片点击放大的场景，隐藏图片链接 */
 .editormd-image-click-expand .editormd-image-dialog {