【css】超级链接点击后出现虚框

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
.a1{ display:inline-block; width:72px; height:27px; line-height:27px; background:url(bluebtn.jpg) no-repeat; text-align:center; border:none; color:#fff; font-size:12px; outline:none;}//chromefirefoxie9
.a1:hover{ color:red; text-decoration:none;}
.layer01,.layer02{ margin:10px;}
</style>
</head>

<body>
<div class="layer01">
<a href="#" class="a1"  hidefocus='true'>添加图片1</a>  /*针对ie6,ie7*/
</div>
<div class="layer02">
<input type="button" value="添加图片2"  hidefocus='true' class="a1"/>
</div>

</body>
</html>
原文地址:https://www.cnblogs.com/positive/p/3880819.html