.middle{ width:1200px; margin:auto; text-align:left}
.common-title{color: #444;font-size:26px;font-weight: 600;margin-bottom: 12px; text-align: center;}
.common-tit{color: #666;font-size: 14px;line-height: 22px; text-align:center;}
.common-tit1{color: #666;font-size: 20px;line-height: 22px;text-align:center; margin:20px;}
.position{font-size: 14px;color: #999;padding: 12px 0 15px}
.position a{color: #999;}