.b_slides{width:100%;height:700px;position:relative;overflow:hidden;}
.b_slideInner{height:700px;position:relative;left:0;margin-left:0;}
.b_slideInner a{display:block;height:700px;background-size:cover;background-position:center center; background-repeat: no-repeat;position:relative;text-align:center;z-index:1;background-size:100%;-moz-background-size:100%; }
.b_slideInner a span{ position:absolute; left:50%; bottom:100px; margin-left:-500px; width:120px; height:35px; line-height:35px; font-size:14px; color:#FFFFFF; text-align:center; border-radius:5px; border:1px solid #FFFFFF; cursor:pointer; }
.b_slideInner a span:hover{ border:1px solid #5da7ce; background: rgba(93,167,206,0.8) none repeat scroll 0 0 !important;/*实现FF背景透明，文字不透明*/;filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr=#CC000000,endColorStr=#CC000000);/*实现IE背景透明*/}
.b_slideInner a div.b_img1{width:100%;height:50px;line-height:50px;position:absolute;bottom:50px;left:0px; color:#FFFFFF; font-size:24px; font-weight:bold; background: rgba(123,193,252,0.8) none repeat scroll 0 0 !important;/*实现FF背景透明，文字不透明*/;filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr=#CC7bc1fc,endColorStr=#CC7bc1fc);/*实现IE背景透明*/}
.b_slideInner a div.b_img2{width:100%;height:50px;line-height:50px;position:absolute;bottom:0px;left:0px; color:#FFFFFF; font-size:24px; font-weight:bold; background: rgba(252,131,140,0.8) none repeat scroll 0 0 !important;/*实现FF背景透明，文字不透明*/;filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr=#CCfc838c,endColorStr=#CCfc838c);/*实现IE背景透明*/}
.b_slideInner .b_slide3 .b_img2{top:200px;}
.b_slideInner .b_slide3 .b_img3{width:181px;height:286px;position:absolute;left:50%;margin-left:330px;top:330px;}
.b_nav{width:1200px;position:absolute;left:50%; top:50%; margin-left:-600px;display:none;}
.b_nav a{display:block;width:41px;height:41px; font-size:20px;opacity:.8;z-index:9; border-radius:41px; line-height:41px; text-align:center; color:#FFFFFF;background: rgba(0,0,0,0.6) none repeat scroll 0 0 !important;/*实现FF背景透明，文字不透明*/;filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr=#CC000000,endColorStr=#CC000000);/*实现IE背景透明*/}
.b_nav a.b_prev{position:absolute;left:0;/*top:-350px;margin-top:-20px;*/background:url(.../images/ban_pre.png) no-repeat;}
.b_nav a.b_next{position:absolute;right:0;/*top:-350px;margin-top:-20px;*/background:url(.../images/ban_next.png) no-repeat;}
.b_navListBox{position:absolute;left:50%;top:675px;z-index:99;}
.b_navListBox li{width:12px;height:12px;float:left;margin-left:5px;border-radius:50%;overflow:hidden;}
.b_navListBox li:first-child{margin-left:0;}
.b_navListBox li a{display:block;width:100%;height:100%;border-radius:50%;background-color:#fff;box-shadow:0 0 5px #666 inset;}
.b_navListBox li a.b_active{background-color:#55ddff;}
.b_sliderlist{ position:absolute; height:30px; width:300px; left:50%; bottom:30px; margin-left:-150px; text-align:center; z-index:1;}
.b_sliderlist ul li{ margin:3px; height:12px; width:12px; border:1px solid #FFFFFF; border-radius:50%; display:inline-block; cursor:pointer; }
.b_liston{ background-color:#FFFFFF;}
@media screen and (min-width:1420px){ /* 执行1200px版的css*/   
}
@media screen and (min-width: 1220px) and (max-width: 1419px) { /*执行1000px版的css*/  
}
@media screen and (min-width: 750px) and (max-width: 1219px) { /*执行750px版的css*/  
.b_slides{width:100%;height:500px;position:relative;overflow:hidden;}
.b_slideInner{height:500px;position:relative;left:0;margin-left:0;}
.b_slideInner a{display:block;height:500px;background-size:cover;background-position:center center; background-repeat: no-repeat;position:relative;text-align:center;z-index:1;background-size:100%;-moz-background-size:100%; }
.b_nav{width:80%;position:absolute;left:10%;top: 50%; margin-left:0px;display:none;}
.b_nav a.b_prev{position:absolute;left:0;/*top:-250px;margin-top:-20px;*/background:url(.../images/ban_pre.png) no-repeat;}
.b_nav a.b_next{position:absolute;right:0;/*top:-250px;margin-top:-20px;*/background:url(.../images/ban_next.png) no-repeat;}
}
@media screen and (max-width: 749px) { /*执行100%宽度版的css*/  
.b_slides{width:100%;height:180px;position:relative;overflow:hidden;}
.b_slideInner{height:180px;position:relative;left:0;margin-left:0;}
.b_slideInner a{display:block;height:180px;background-size:cover;background-position:center center;position:relative;text-align:center;z-index:1;}
.b_sliderlist{ opacity:0}
}