实例:

左侧:通过定义.mui-col-sm-6类在大屏(≥400px)设备上会展现为并排的两列,而.mui-col-xs-12在小屏(＜400px)设备上会覆盖之前定义的类展现为水平排列

<div class="mui-content">
    <div class="mui-row">
        <div class="mui-col-sm-6 mui-col-xs-12">
            <li class="mui-table-view-cell">
                <a class="mui-navigate-right">
                    Item 1    
                </a>
            </li>
        </div>
        <div class="mui-col-sm-6 mui-col-xs-12">
            <li class="mui-table-view-cell">
                <a class="mui-navigate-right">
                    Item 1
                </a>
            </li>
        </div>
    </div>
</div>