页面可用性之outline轮廓外框的一些研究
.indent{text-indent:-1000px;}
.absolute{position:relative;}
.absolute span{position:absolute; left:-1000px;}
a{outline:none;}
a{outline:none;}
a:focus{outline:thin dotted;}
a{outline:none;}
a:focus{outline:thin dotted;}
a:active{outline:none;}
a:active{outline:none;}
a:hover,a:active{outline:none;}
<a href="#" hidefocus="true">链接</a>
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