body{
    position: relative;
}

.container-wrap,footer{
    margin: 0 auto;
    width: 1200px;
}
.left-wrap{
    float: left;
    width: 870px;
}
.right-wrap{
    float: right;
    width: 310px;
}
.clearfix::after {
    display: block;
    content: "";
    height: 0;
    clear: both;
    visibility: hidden;
}

.container-wrap{
    background: #fff;
    height: auto;
    min-height: 100%;
    overflow: hidden;
}
.container-wrap .container{
    padding-bottom: 257px; /* footer区块的高度 */
}
/*banner*/
#banner{
    margin-bottom: 15px;
}
#banner .img-wrapper img{
   height: 100px;
   width: 100%;
}
/*nav*/
header{
    margin-top: 20px;
}
nav#nav{
    background: #fafafa;
    border-radius: 3px;
    border: 1px solid #d8d8d8;
    height: 50px;
    line-height: 50px;
    position: relative;
}
nav#nav span.nav-label{
    color: #00487e;
    cursor: pointer;
    height: 54px;
    line-height: 54px;
    position: absolute;
    top: -2px;
    left: -2px;
    text-align: center;
    width: 183px;
}
nav#nav span.hover-label,
nav#nav ul li.hover-label{
    background: transparent url("main-nav.png") no-repeat 0 0;
    background-size: 100% 100%;
    color: #fff;
}
nav#nav span.sub-page.hover-label:after,
nav#nav ul li.sub-page.hover-label:after{
    border: none;
}
nav#nav ul{
    padding-left: 183px;
}
nav#nav ul li{
    color: #00487e;
    cursor: pointer;
    float: left;
    position: relative;
    text-align: center;
    width: 33.33%;
}
nav#nav span.sub-page:after,
nav#nav ul li.sub-page:after{
    border: 1px solid #00487e;
    content: "";
    height: 20px;
    margin-top: -10px;
    width: 0px;
    position: absolute;
    top: 50%;
    right: -5px;
}

/*sub-iframe*/
.sub-iframe{
    display: none;
}
.show{
    display: block;
}
.iframe-wrap{
    margin-top: 25px;
}
.iframe-wrap iframe{
    width: 100%;
}
/*news-detail-iframe*/
#detail-wrap{
    position: absolute;
    top: 100px;
    left: 50%;
    margin-left: -495px;
    z-index: 10;
}
#detail-wrap.hide-iframe{
    z-index: -1;
}
#detail-iframe{
    
}
/*cover*/
#bg-cover{
   background: rgba(0,0,0,0.3);
   display: none;
   position: fixed;
   top: 0;
   left: 0;
   bottom: 0;
   right: 0;
   width: 100%;
   z-index: 1;
}
/*footer*/
footer{
    background: #e3f0f8;
    color: #5b95ca;
    padding: 35px 25px;
    position: relative;
    margin-top: -220px;  /* 使footer区块正好处于content的padding-bottom位置 */
    height: 220px;
    clear: both;
}
footer p{
    margin-bottom: 20px;
}