默认滚动条样式调整

src/assets/main.css

@@ -16,13 +16,13 @@ a {
 
 ::-webkit-scrollbar {
   z-index: 11;
-  width: 6px;
-  height: 6px;
+  width: 4px;
+  height: 4px;
 }
 ::-webkit-scrollbar-thumb {
   border-radius: 5px;
-  width: 6px;
-  background: #909399;
+  width: 4px;
+  background: #E5E5E5;
 }
 ::-webkit-scrollbar-corner {
   background: #fff;
@@ -32,7 +32,7 @@ a {
 }
 ::-webkit-scrollbar-track-piece {
   background: #fff;
-  width: 6px;
+  width: 4px;
 }
 
 .avatar-uploader .el-upload {