
    <nz-splitter>
      <nz-splitter-panel [nzCollapsible]="true">
        <div class="box">Left</div>
      </nz-splitter-panel>
      <nz-splitter-panel>
        <nz-splitter nzLayout="vertical">
          <nz-splitter-panel>
            <div class="box">Top</div>
          </nz-splitter-panel>
          <nz-splitter-panel>
            <div class="box">Bottom</div>
          </nz-splitter-panel>
        </nz-splitter>
      </nz-splitter-panel>
    </nz-splitter>
  