Element tree设置滚动条

只需添加以下样式即可

<style scoped>
/deep/ .el-tree {
    
    
  width: 100%;
  height: 100%;
  overflow: auto;
}

/deep/ .el-tree>.el-tree-node {
    
    
  display: inline-block;
  min-width: 100%;
}
</style>