button {width:auto!important;_width:30px;overflow:visible;padding:0 15px;}
button[class|="btn"]:after { content:""; display:block; height:0; overflow:hidden; min-width:30px; margin:0 -15px;}
分类
button {width:auto!important;_width:30px;overflow:visible;padding:0 15px;}
button[class|="btn"]:after { content:""; display:block; height:0; overflow:hidden; min-width:30px; margin:0 -15px;}