@media all{
.AboutUs_nav{ background-color:#fff; border-top:1px solid #f3f3f3; margin-left:-15px; margin-right:-15px;}
.AboutUs_dl dt{ padding:10px 15px; background-color:#fbfbfb; margin:0; color:#000; font-size:14px; text-align:center; cursor:pointer;}
.AboutUs_dl dd{ padding:0 15px; font-size:13px; display:none;}
.AboutUs_dl .AboutUs_nav_ondd a span{ padding-bottom:2px; border-bottom:1px solid #c7000b; color:#c7000b;}
.AboutUs_dl dd a{ text-align:center; display:inline-block; width:100%; padding:5px; color:#7c7e7f;}
.AboutUs_dl dd a:hover{ box-shadow:0 0 5px 0 rgba(195,20,10,0.2); background-image:-webket-gradient(linear,top,from(#fafaf8),to(#feefee)); background-image:-webket-linear-gradient(top,#fafaf8,#feefee); background-image:-moz-linear-gradient(top,#fafaf8,#feefee); background-image:-o-linear-gradient(top,#fafaf8,#feefee); filter:progid:DXImageTransform.Microsoft.Gradient(startColorStr='#fafaf8',endColorStr='#feefee',gradientType='0'); color:#c7000b;}
.AboutUs_contant h3{ color:#25282a; font-size:26px; margin-top:10px;}
.AboutUs_contant h4{ color:#25282a;}
.AboutUs_contant p{ color:#525355; }
.sustain_box{ padding:20px 0; margin-bottom:20px;}
.sustain_box ul li img,.shangcheng_box ul li img{ max-width:100%; margin-top:20px; margin-bottom:5px;}
.sustain_box ul li >div:last-child{ width:60%;}
.sustain_box ul li h4{ padding-bottom:10px;}
.sustain_box ul li:nth-child(2n+1) h4{ color:#c7000b;}
.sustain_box ul li:nth-child(2n) h4{ color:#c7000b;}

}
@media (min-width:768px){
.AboutUs_nav{ float:left; width:18%; min-height:300px; border:1px solid #dadada; padding-bottom:5px; margin-left:0; margin-right:0;}
.AboutUs_nav dt{ font-size:14px; padding:10px 15px; background-color:#7c7e7f; color:#fff; text-align:left; margin-bottom:5px;}
.AboutUs_nav dd{ display:block;}
.AboutUs_nav dd a{ color:#333; text-align:left;}
.AboutUs_contant{ float:right; padding-bottom:30px;}
.AboutUs_contant >div >img{ margin-bottom:15px;}
.AboutUs_contant h3{ margin-top:5px; text-align:center;}
.sustain_box{ padding:15px 0; margin-bottom:0;}
/*.sustain_box p,.sustain_box h4{ max-width:90%;}*/
.sustain_box ul li,.shangcheng_box ul li{ float:left; width:50%; padding:10px 70px;}
.sustain_box ul li:nth-child(3) h4{ color:#c7000b;}
.sustain_box ul li:nth-child(4) h4{ color:#c7000b;}

}