a:link,a:visited { display:block; background-color:#98bf21; width:120px; text-align:center; padding:4px; text-decoration:none; } a:hover,a:active { background-color:#7A991A; }
css 做一个常见的按钮
原文：http://www.cnblogs.com/yufenghou/p/4201592.html
