.main{ margin-left:20px; margin-right:20px; margin-top:5%; }
.main li{ width:50%; height:auto; float:left; margin-bottom:5%;}
.a1 {width:124px; height:113px; margin:auto; border-radius:10px; background:#eee; padding-top:11px;}
.a2 {width:72px; height:72px; border-radius:50px; margin:0 auto; background:#70da84; font-size:50px; color:#FFF; text-align:center; line-height:74px; text-shadow: #519d60 3px 0 3px;}
.a2 img{width:48px; height:48px; margin-top:14px;}
.a8 {width:72px; height:72px; border-radius:50px; margin:0 auto; background:#0CC; font-size:50px; color:#FFF; text-align:center; line-height:74px; text-shadow: #519d60 3px 0 3px;}
.a8 img{width:48px; height:48px; margin-top:14px;}
.a3{width:124px; height:30px; margin-top:11px; border-bottom-left-radius:10px; border-bottom-right-radius:10px; background:#17b4eb; font-size:17px; text-align:center; line-height:30px; color:#FFF;}