col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-microphone"></i><span>fa-microphone</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-microphone-slash"></i><span>fa-microphone-slash</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-minus"></i><span>fa-minus</span></li>
                <li class='layui-col-xs4 layui-col-sm3 layui-col-md2 layui-col-lg1 '><i class="fa fa-minus-cir