#warpper{ width:996px; margin:auto;}
#btnwarpper{ margin-bottom:100px;}
td{ text-align:center; line-height:20px;}
td a{ margin:0 10px 0 10px;}
#choice a{ display:block; width:198px; height:41px; background:url(../img/bigbtn.jpg) no-repeat; line-height:40px; font-size:16px; font-family:"微软雅黑"; font-weight:bolder; text-align:center;  margin:auto; margin-top:40px; }