header{
    display: flex;
    justify-content: space-between;
    flex-wrap: nowrap;
    flex-direction: row;
    background-color: #f9f9f9;
    align-items: center;
}
header .logo{
    display: block;
    height: 90px;
    margin-left: 30px;
}
header .logo img{
    display: block;
    height: 100%;
    padding: 10px 0;
    box-sizing: border-box;
}
header a{
    color: #555;
    text-decoration: none;
}
nav{
    height: 100px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
}
nav > ul{
    display: flex;
}
nav > ul > li{
    position: relative;
}
nav > ul > li a{
    line-height: 100px;
    display: block;
    padding:0 30px;
    height: 100px;
    white-space: nowrap;
    transition: .5s;
}
nav > ul > li a.current{
    background-color: #006dae;
    color: white;
}
nav > ul > li a:hover{
    background-color: #006dae;
    color: white;
}
nav > ul > li ul{
    display: none;
    position: absolute;
    left: 0;
    top: 100%;
    z-index: 9999998;
}
nav > ul > li ul li a{
    background-color: rgba(0, 109, 174, .8);
    color: white;
    height: 70px;
    line-height: 70px;
    white-space: nowrap;
}
nav > ul > li:hover ul{
    display: block;
}
.list-group-item{
    line-height: 40px;
}
.list-group-item > p{
    margin: 0;
}
.expand{
    transform: rotate(90deg);
    -webkit-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    -o-transform: rotate(90deg);
    transition: all .2s;
    -webkit-transition: all .2s;
    -moz-transition: all .2s;
    -ms-transition: all .2s;
    -o-transition: all .2s;
}
.contact{
    background-color: #006dae;
    line-height: 100px;
    border-left:1px solid #f9f9f9;
	white-space: nowrap;
}
.contact .icon{
    font-size: 26px;
}
.wechat,.telephone{
    padding: 0 10px;
	white-space: nowrap;
}
.wechat{
    cursor: pointer;
    border-right: 1px solid #ccc;
    position: relative;
}
.wechat img{
    display: none;
    position: absolute;
    left: 0;
    top: 70px;
    z-index: 9999999;
    border: 10px solid white;
    border-radius: 3px;
}
.telephone a{
    color: white;
    font-weight: bold;
    font-size: 18px;
    margin-left: 10px;
	white-space: nowrap;
}
.mobile{
    margin-right: 30px;
}
.mobile,.mobile-nav{
    display: none;
}
.mobile .icon{
    font-size: 26px;
}
.navbar-collapse{
    justify-content: flex-end;
}
@media screen and (max-width: 1300px) {
    nav{
        height: 80px;
    }
    header .logo{
        height: 80px;
    }
    nav > ul > li a{
        height: 80px;
        line-height: 80px;
        padding:0 20px;
    }
    .contact{
        line-height: 80px;
    }
}
@media screen and (max-width: 1200px) {
    .contact{
        display: none;
    }
}
@media screen and (max-width: 1024px) {
    header .logo{
        display: block;
        height: 70px;
    }
    .logo img{
        padding: 10px 0;
        box-sizing: border-box;
    }
    nav{
        display: none;
    }
    .mobile{
        display: block;
    }
}