纯css 超链接变按钮

a{
font-family:Arial;
font-size:.8em;
text-align:center;
margin:3px;
}
a:link,a:visited{
color:#A62020;
padding:4px 10px;　　/*鼠标放上前字体位置*/
background-color:#ecd8db;
text-decoration:none;
border-top:1px solid #EEE;
border-left:1px solid #EEE;
border-bottom:1px solid #717171;
border-right:1px solid #717171;
}
a:hover{
color:#821818;
padding:5px 8px 3px 12px;　　/*鼠标放上后字体位置*/

background-color:#e2c4c9;
border-top:1px solid #717171;
border-left:1px solid #717171;
border-bottom:1px solid #EEE;
border-right:1px solid #EEE;
}