*{box-sizing: border-box;}
body{background: url(../images/bdxdbody_bg.jpg) top center no-repeat #d9ebfc;}
.header_top{background-color: #5693ac;}
.bdxd_head{margin-bottom: 30px;}
.bdxd_body{margin-bottom: 60px;}
.banner_top{background-color: #1b4fa5;}
.ztzl_logo{display: block;margin-top: 40px;width: 350px;}
.ztzl_logo img{display: block;width: 100%;}
.bdxdtle_box{position: relative;text-align: center;}
.bdxdtle_box .bdxdtle_img{float: left;margin: 40px 150px 0;}
.zt-intro{padding: 30px 34px 30px 34px;border-radius: 10px;text-align: justify;background-color: #e6f3f6ad;box-shadow: 0 0 6px 2px #8bcaf973;}
.zt-intro p{line-height: 36px;font-size: 20px;text-indent: 2em;font-weight: 500;}

.bdxd_tle_list{margin: 25px 0;}
.bdxd_tle_list ul li{float: left;width: 32%;height: 100px;margin-right: 2%;overflow: hidden;background-color: #fff;border-radius: 10px;border: 1px solid #9fcce5;}
.bdxd_tle_list ul li:last-child{margin-right: 0;}
.bdxd_tle_list ul li a{color: #0c55d5;font-size: 22px;font-weight: bold;display: block;width: 100%;height: 100%;/* align-content: center; */background: url(../images/bdxdtle_bg.png) no-repeat right center;padding: 30px 50px;}
.bdxd_tle_list ul li a:hover{background-color: #78c7f9bd;}

.bdzt-list ul li{margin-top: 20px;float: left;margin-right: 45px;}
.bdzt-list ul li a{display: block;height: 170px;opacity: 1;}
.bdzt-list ul li a:hover{opacity: .8;}
.bdzt-list ul li:nth-child(4n+4){margin-right: 0;}


@media screen and (max-width: 800px){
    .header_top{display: none;}
    .ztzl_logo{width: 60%;margin: 20px 0 0 20px;}
    .bdxdtle_box .bdxdtle_img{float: none;display: block;width: 80%;margin: 20px auto;}
    .zt-intro{padding: 10px;border: none;}
    .zt-intro p{line-height: 1.8;font-size: 16px;}
    .bdxd_body{padding: 0 10px;margin-bottom: 20px;}
    .bdxd_tle_list{margin: 10px 0;}
    .bdxd_tle_list ul li{width: 100%;float: none;margin: 0 0 10px;}
    .bdzt-list ul li{margin-right: 2%;width: 48%;text-align: center;}
    .bdzt-list ul li a img{display: block;width: 80%;margin: 0 auto;}
    .bdzt-list ul li a{height: auto;}
}