 class="layui-row grid-demo grid-demo-bg1">
        <div class="layui-col-md12">
          <div class="grid-demo">内部列</div>
        </div>
        <div class="layui-col-md9">
          <div class="grid-demo grid-demo-bg2">内部列</div>
        </div>
        <div class="layui-col-md3">
          <div class="grid-demo grid-demo-bg3">内部列</div>
        </div>
      </div>
    </div>
  </div>

</div>

<div class="layui-fluid">
  <fieldset class="layui-elem-field layui-field-title">
    <legend>流