@media screen and (min-width: 979px) and (max-width: 1200px) {
    body { margin: 0 4px; }
	.w1170,{ width:100%;}
	
    .w1170 .welcome { display:none;}
}

@media screen and (min-width: 768px) and (max-width:978px) {
    body { margin: 0 4px; }
    .nav_img { display: none; }
 
 
    .nav_img { display: block; float: right; margin-top: 20px;  margin-right: 15px; z-index:99 }
        .nav_img a { width: 30px; height: 30px; display: inline-block; }
    .daohang { width: 100%; background: #222; position: absolute; top: 88px; left: 0; z-index: 99; display: block; }
        .daohang p.navli { height: 40px; width: 100%; font-size: 15px; color: #333; line-height: 40px; cursor: pointer; }
            .daohang p.navli a { color: #fff; display: block; border-bottom: 1px solid #ccc; padding-left: 20px; }
                .daohang p.navli a:hover { color: #fff; background: #ff4a00; display: block; }
    .navul,.xg_news .date,.sidebar { display: none; }  
	
	.w1170,.sy_pro,.container,.pro_lei,.product_list,.case_list,.news_tj,.sub_new_tit,.list_img, .xg_case,.case_detail,.xg_case_detail,.sol_list{ width:100%}     
	.header_top_bg .tel,.sy_new dl,.nav1170{ width:100%}   

.w1170 .welcome { display:none;}
              
    
}

@media screen and (max-width: 767px) {
    body { margin: 0 4px; }
    .bottomlist,.footer_txt,.top.cd-is-visible { display: none; }
    .navbar-default .navbar-collapse, .navbar-default .navbar-form { background: #000; position: absolute; width: 80%; z-index: 65; }   .case_detail .mes{ display:none}   .sub_left img{ width:100%; height:auto}

.w1170,.sy_sol,.que,.g-wrap,.header_top_bg .tel,.service .ren,.container,.pro_lei,.news_tj,.sub_new_tit,.list_img, .xg_case,.case_detail,.xg_case_detail,.sol_list{ width:100%;}   .header_top_bg .tel{ float:right;background: url(../images/tel.png) no-repeat left 5px;}
.que{ float:left}
.que h3{ text-align:left}



  
	

 
  .w1170 .welcome { display:none;}   .sol_list dd p{ display:none}