- I introduced el-cascader in el-dialog, but there is a problem with the display style of the cascaded display.
 - style code
 
    <el-dialog title="" :visible.sync="changeTableDialogVisible" width="40%" center>
      <el-cascader :options="options" @change="handleChange"></el-cascader>
      <span slot="footer" class="dialog-footer">
        <el-button @click="changeTableDialogVisible = false"></el-button>
        <el-button type="primary" @click="confirmChangeTable"></el-button>
      </span>
    </el-dialog>
- error screenshot
 
 
 

