
    <nz-splitter>
      <nz-splitter-panel [nzCollapsible]="true">
        <div class="box">Panel 1</div>
      </nz-splitter-panel>
      <nz-splitter-panel [nzCollapsible]="{ start: true }">
        <div class="box">Panel 2</div>
      </nz-splitter-panel>
      <nz-splitter-panel>
        <div class="box">Panel 3</div>
      </nz-splitter-panel>
    </nz-splitter>
  