我使用 css flexbox 作为网格视图，使用 Modernizr 来检测不支持 flexbox 的浏览器。
但是Android UC Browser似乎不理解flex-wrap: wrap;（它将所有项目显示在一行中）并且同时使用应用于.flexbox.flexwrap类的样式。我究竟做错了什么？
这是示例代码：
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* https://modernizr.com/download/?-flexbox-flexwrap-addtest-prefixed-prefixedcss-prefixedcssvalue-setclasses-testallprops-testprop !*/
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padding: 0; box-sizing: border-box;}
.item {
height: 100px;
background: green;
box-shadow: 0 0 0 1px white;
width: 50%;
}
.flexbox.flexwrap .container{
display: -webkit-box;
display: -webkit-flex;
display: flex;
-webkit-flex-wrap: wrap;
-ms-flex-wrap: wrap;
flex-wrap: wrap;
}
.flexbox.flexwrap .item {
float: none;
}<div class="container">
<div class="item">
</div>
<div class="item">
</div>
<div class="item">
</div>
<div class="item">
</div>
</div>和 jsfiddle：https ://jsfiddle.net/vL2azcc2/3/