body{ min-width: 1220px;}
.banner{ height: 500px; background:url(http://tyjr.bjtlyc.com/pcimages/zstp_banner.png) center no-repeat; }

.tbody{ background:url(http://tyjr.bjtlyc.com/pcimages/zstp_bg_1.png) top center; background-size:100% 100%; }
.part1{ padding-top:20px; }
.part1 .wrap{ background:url(http://tyjr.bjtlyc.com/pcimages/zstp_bg_2.png) center no-repeat; background-size: auto 100%;  }
.part2{ padding-bottom:20px; }
.part2 .wrap{ background:url(http://tyjr.bjtlyc.com/pcimages/zstp_bg_3.png) center no-repeat; background-size: auto 100%;  }

.tbody h2 span{ position: relative; display: inline-block; padding:0px 50px; height: 50px; line-height: 50px; border-radius: 50px; background:#447cc7; color:#fff; }
.tbody h2 span::before,.tbody h2 span::after{ position: absolute; top:28px;  content:''; display: block; width:300px; height: 4px; background:#447cc7; }
.tbody h2 span::before{ right: 50%; margin-right:140px; }
.tbody h2 span::after{ left: 50%; margin-left:140px; }