fix：DNS下钻表格的流入流出查询次数百分比图显示，在0%的时候仍然有显示

src/assets/css/components/views/charts2/networkOverviewTabs.scss

@@ -32,13 +32,11 @@
           .div-yellow {
             height: 12px;
             background: #e5a219;
-            border: 1px solid #e5a219;
             border-left: none;
           }
           .div-green {
             height: 12px;
             background: #749f4d;
-            border: 1px solid #749f4d;
             border-right: none;
           }
         }