随便写一个空标签，引入类就可以，font-size定义图标大小。例如：

<i class="iconfont layui-icon-ali-auto" style="font-size:500px">

<p class="iconfont layui-icon-ali-auto" style="font-size:100px">

<img src="" alt="" class="iconfont layui-icon-ali-auto" style="font-size:100px">

<div class="iconfont layui-icon-ali-auto" style="font-size:100px"></div>