.sub_cont{position:relative;padding:20px 400px 100px 0;}
.sub_cont img{position:absolute;right:0;top:30px;width:350px;}
.sub_cont .section{margin-top:40px;font-size:14px;line-height:1.3em}
.sub_cont .section:first-child{margin-top:0;}
.sub_cont .section p{line-height:1.5em}

.sub_tit{padding-left:18px;margin-bottom:15px;color:#333333;font-weight:bold;font-size:16px;background:url(/app/dubu_sourcecode/docs/imgs/1492587832_icon.png) no-repeat 0 2px;background-size:13px auto;}
.list_txt li{position:relative;padding-left:10px;margin-top:10px;color:#666;font-size:14px;line-height:1.3em;}
.list_txt li:before{display:block;position:absolute;left:0;background:#666;width:2px;height:2px;top:9px;content:"";vertical-align:middle;}
.list_txt li:first-child{margin-top:0}
    
.box{padding:20px;margin-top:15px;border:1px solid #e6e6e6;border-radius:5px;background:#f9f9f9;line-height:1.5em}
/* tablet */
@media screen and (min-width:769px) and (max-width:991px){
    
    .sub_cont{padding:20px 300px 0 0;}
    .sub_cont .section{margin-top:30px;}
    .sub_tit{font-size:17px;background-position:0 3px;}
    
    .sub_cont img{width:270px;}
    
}

/* mobile */
@media screen and (max-width:768px){
    
    .sub_cont{padding:0;}
    .sub_cont .section{margin-top:20px;}
    .sub_cont .section p br{display:none}
    .sub_tit{font-size:16px;}
    .box{margin-top:10px;padding:15px;}
    .list_txt li{padding-left:7px;}
    .sub_cont img{position:static;width:100%;margin-top:20px;}
}