*{margin:0;padding:0}
body{background:#f8f8f8}
.o_header{width:100%;position:relative;height:600px}
.o_header img{width:100%;height:100%;object-fit:cover}
.o_tab_box{height:80px;line-height:80px;background:#2196F3}
.o_tab{position:fixed;z-index:9;left:0;top:0;width:100%;background:#fff;box-shadow:0px 0px 10px #ddd}
.o_tab_fixed{width:1200px;margin:0 auto;height:80px;line-height:80px;overflow:hidden;position:relative}
.o_tab a{float:left;font-size:16px;font-weight:bold;color:#333;padding:0 40px;text-decoration:none;margin-right:50px}
.o_tab a.active{background:#795548;color:#fff}
.o_tab a:hover{background:#795548;color:#fff}
.o_con{width:1200px;margin:50px auto;padding:0 10px;box-sizing:border-box}
.o_con ul{display:none}
.o_con ul.active{display:block}
.o_con ul li{list-style:none;text-indent:2em;font-size:14px;line-height:26px;color:#444;margin-bottom:20px}
.o_con ul h1{height:50px;line-height:50px;margin:20px 0;color:#333;font-size:30px}
.o_con ul h2{}
.o_con ul h3{height:30px;line-height:30px;font-size:18px;position:relative;margin:20px 0;text-indent:1em}
.o_con ul h3:before{content:'';width:4px;height:20px;background:#2196F3;position:absolute;top:0;left:0;bottom:0;margin:auto}
.o_con ul li img{display:block;margin:40px auto;max-width:100%}
.o_footer{background:#333}
.o_footer a{display:block;height:80px;line-height:80px;text-align:center;color:#fff;font-size:16px;text-decoration:none}
.o_footer a:hover{color:#ddd}



@media screen and (max-width: 750px) {
	.o_header{
    height: 200px;
}
.o_header img{}
.o_tab_box{
    height: 50px;
    line-height: 50px;
}
.o_tab{}
.o_tab_fixed{
    width: 100%;
    height: 50px;
    line-height: 50px;
	display: flex;
    justify-content: space-between;
}
.o_tab a{
    margin: 0;
    font-size: 14px;
    padding: 0 30px;
}

.o_con{
    width: 100%;
    margin: 0 auto;
    padding: 10px 0;
}
.o_con ul{
    padding: 0 10px;
}

}