<!DOCTYPE html><html><head>??? <meta charset="UTF-8">?<title>test</title>?<style type="text/css">?? .item{??? width:200px;??? height: 100px;??? background: yellow;?? }?? .item span{??? display: block;??? margin: 0 5px;??? width:50px;??? height: 50px;??? background:blue;??? float: left;?? }?? .myc{??? background-color: red;?? }?</style></head><body>?<div class="item">?? <span class="myc" >11</span>?? <span></span>?? <span></span>?</div></body></html>
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