el-tree固定高度加滚动条

<div class="tree mt10">
                <el-tree
                  :data="date"
                  show-checkbox
                  node-key="moduldCode"
                  ref="tree"
                  :check-strictly="false"
                  :highlight-current="true"
                  :check-on-click-node="true"
                  :accordion="true"
                  :default-checked-keys="[checkedkey]"
                  :default-expanded-keys="checkedkey"
                  :filter-node-method="filterNode"
                  :props="defaultProps"
                  :default-expand-all="true"
                  @check-change="parentModules"
                  @node-click="clickTree"
                ></el-tree>
              </div>

<style  lang="scss"  scoped>
.el-tree {
  min-width: 100%;
  display: inline-block;
}
.tree {
//   overflow-y: auto;
//   overflow-x: scroll;
  overflow:auto;
  max-height: 200px;
  /*200px;*/
//   border: 1px solid blue;
}
</style>