diff --git a/static/js/event/impl/RSizeEventImpl.js b/static/js/event/impl/RSizeEventImpl.js
index 4bb52dd..aef93e5 100644
--- a/static/js/event/impl/RSizeEventImpl.js
+++ b/static/js/event/impl/RSizeEventImpl.js
@@ -31,6 +31,11 @@ define(function (require, exports, module) {
             curClientW = designWidth;
         }
 
+        if (curClientW >= designWidth) {
+            ctx.MyRoot().style.width = "60%";
+        } else {
+            ctx.MyRoot().style.width = "100%";
+        }
 
         let dpr = getDpr();
         //set 1rem = curClientW / designWidth (支持响应式)