html{box-sizing: border-box;
    /*font-size:87.5%;*/
}
body{margin:0;padding:0;font-family:"microsoft yahei";color:#1a1a1a;}
div,p,h1,h2,h3,h4,ul,dl{margin:0;padding:0;font-weight: normal;}
ul{list-style:none;}
a{text-decoration:none;color:#000;}
.rt{float:right;}
.lt{float:left;}
.clear{clear:both;}
p{
    line-height: 25px;
    text-align: justify;
    margin-bottom: 15px;
    font-size:16px;
}
/*banner*/
.bg_pic{
    width: 100%;
    height: 500px;
    background: url(../images/banner_01.png) no-repeat center center;
}
/*详细信息*/
.main_container{
    width: 100%;
    height:3500px;
    background: url(../images/back_02.png) no-repeat center center;
}
/*ces介绍*/
.ces_intro,.join_exbin{
    margin:30px 0 60px 0;
    overflow: hidden;
}
.ces_intro h1,.join_exbin h1{
    text-align: center;
    font-size:30px;
}