Pull request #2217: 无JIRA任务 优化一下

Merge in VISUAL/fineui from ~GUY/fineui:master to master

* commit 'd1ef2cc56d77b3c2b64811ef202575575fa464a7':
  update

src/less/base/combo/popup.bubble.less

@@ -1,11 +1,8 @@
 @import "../../index";
 
 .bi-bubble-popup-view {
-  .box-shadows(0px 9px 28px 8px rgba(0, 0, 0, 0.05), 0px 6px 16px 0px rgba(0, 0, 0, 0.08), 0px 3px 6px -4px rgba(0, 0, 0, 0.12));
-  .border-radius(4px);
-
-  // 只去掉bubble-popup子元素的阴影
   &.bi-popup-view > .list-view-shadow {
-    .box-shadow(none);
+    .box-shadows(0px 9px 28px 8px rgba(0, 0, 0, 0.05), 0px 6px 16px 0px rgba(0, 0, 0, 0.08), 0px 3px 6px -4px rgba(0, 0, 0, 0.12));
+    .border-radius(4px);
   }
 }