.banner {
    position: relative;
}
.banner .txt{
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -59px 0 0 -253px;
}
.banner .img {
    width: 100%;
    height: 340px;
    display: block;
}
.menus_box {
    width:100%;
    height:58px;
    opacity:.9;
    filter:alpha(opacity=90);
    position: relative;
}
.menus_box .menu_bg {
    width:100%;
    height:100%;
    background:#000;
}
.menus_box .menu {
    text-align:center;
    width:100%;
    position:absolute;
    bottom:0;
    left:0;
    height:58px;
}
.menus_box .menu .menu_item{
    -webkit-box-sizing:border-box;
    -moz-box-sizing:border-box;
    -ms-box-sizing:border-box;
    -o-box-sizing:border-box;
    box-sizing:border-box;
    height:58px;
    width:207px;
    border-top:3px solid transparent;
    display:inline-block;
    color:#7d7d7d;
    line-height:55px;
    font-size:16px;
}
.menus_box .menu .menu_item:hover{
    color:#fff;
}
.menus_box .menu .menu_item.cur{
    background:#2d2d2d;
    border-top:3px solid #258bff;
    color:#fff;
}