为什么要用<i>包裹<img>，可以不要<i>吗
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <link rel="stylesheet" type="text/css" href="taobao.css"> <script type="text/javascript" src="taobao.js"></script> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> <div id="div1"> <a href="#"><i><img src="icon/20150820091800.png" ></i><p>理财</p></a> <a href="#"><i><img src="icon/20150820091826.png" ></i><p>找服务</p></a> <a href="#"><i><img src="icon/20150820091933.png" ></i><p>音乐</p></a> <a href="#"><i><img src="icon/20150820091955.png" ></i><p>理财</p></a> <a href="#"><i><img src="icon/20150820092109.png"></i><p>水电煤</p></a> <a href="#"><i><img src="icon/20150820092137.png" ></i><p>火车票</p></a> <a href="#"><i><img src="icon/20150820092149.png" ></i><p>外卖</p></a> <a href="#"><i><img src="icon/20150820092158.png" ></i><p>电影</p></a> </div> </body> </html>
如题，用<i>的意义是什么呢
