.wrapper{
    max-width: 1920px;
    width: auto;
    background:#f5f5f5;
}
.header{
    height: 161px;
    margin: auto;
}
.footer{
    height:175px;
    background: #3c3c3c;
}
/*banner样式*/
.banner_turn .pics img{
    height:280px;
    width:100%;
    min-width:1200px;
}
.nav_brd{
    width: 1200px;
    margin: 30px auto;
}
.nav_brd a{
    font-size:14px;
    color:#888;
    font-family:'Microsoft YaHei';
}  
.nav_brd span a:last-child{
    color:#51225a;
    cursor:text;
}
.product_box{
    width: 1200px;
    margin: 0 auto;
    margin-bottom:105px;
}
.clear{
    clear:both;
}