v class="grid-demo grid-demo-bg1">33.33%</div>
    </div>
    <div class="layui-col-md4">
      <div class="grid-demo">33.33%</div>
    </div>
    <div class="layui-col-md4">
      <div class="grid-demo grid-demo-bg1">33.33%</div>
    </div>
  </div>

  <br>

  <div class="layui-row">
    <div class="layui-col-md6">
      <div class="grid-demo grid-demo-bg1">50%</div>
    </div>
    <div class="layui-col-md6">
      <div class="grid-demo">50%</div>
    </div>
  </div>

  <fieldset class="layui-elem-field la