You can scroll around too much elementui tree component level

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1. Use vue + elementui of tree components, elementui official website elementui of tree components
2. Problem Description: can not scroll too much about the hierarchy tree
   
3. Problem Solution: Modify the overflow property value

   .el-tree-node>.el-tree-node_children {
       overflow: visible;
   }

    

4. Other links: CSS - overflow property ; set overflow-x of the same elements: visible; overflow-y: hidden does not take effect

Reproduced in: https: //my.oschina.net/yxmBetter/blog/1831862