fix: 增加滚动条

package.json

 {
   "name": "panda-xform",
-  "version": "4.2.5",
-  "description": "4.2.5 增加内边距",
+  "version": "4.2.6",
+  "description": "4.2.6 增加滚动条",
   "keywords": [
     "panda-xform"
   ],

src/main.less

@@ -35,6 +35,22 @@ body #app {
     .@{ant-prefix}-spin-container {
       height: 100%;
       overflow: auto;
+      &::-webkit-scrollbar {
+        width: 6px;
+        /*竖向滚动条的宽度*/
+        height: 6px;
+        /*横向滚动条的高度*/
+      }
+      &::-webkit-scrollbar-thumb {
+        /*滚动条里面的小方块*/
+        background: #c8c8c8;
+        border-radius: 3px;
+      }
+      &::-webkit-scrollbar-track {
+        /*滚动条轨道的样式*/
+        background: #fff;
+        border-radius: 3px;
+      }
     }
   }
   .@{ant-prefix}-spin-spinning {