* {
    outline: none;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -o-box-sizing: border-box;
    box-sizing: border-box;
}

.wp{
    width: 1200px;
    margin: 0 auto;
}

.header{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 9999;
    height: 80px;
    background-color: rgba(26,123,185,0.8);
}

.header {
    *zoom: 1;
}

.header:after,
.header:before {
    display: block;
    content: "clear";
    height: 0;
    clear: both;
    overflow: hidden;
    visibility: hidden;
}

.header .logo {
    float: left;
    height: 80px;
    line-height: 80px;
}

.header .logo img {
    display: inline-block;
    vertical-align: middle;
    max-width: 100%;
    max-height: 100%;
}
.header .logo img.mobile-view{
    display: none;
}
.header .phone{
    font-size: 40px;
    color: #FFFFFF;
    display: block;
    float: right;
    height: 80px;
    line-height: 80px;
    font-family: "思源黑体";
}

.nav {
    float: left;
    margin-left: 90px;
}

.nav li {
    float: left;
    position: relative;
}

.nav li>a {
    position: relative;
    display: block;
    font-size: 18px;
    margin-right: 5px;
    padding:0 20px;
    text-align: center;
    height: 80px;
    line-height: 80px;
    color: #FFFFFF;
    transition: .5s;
    -ms-transition: .5s;
    -moz-transition: .5s;
    -webkit-transition: .5s;
    -o-transition: .5s;
}

.nav li>a:after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 26px;
    height: 1px;
    width: 0;
    border-radius: 0;
    opacity: 0;
    transition: .5s;
    -ms-transition: .5s;
    -moz-transition: .5s;
    -webkit-transition: .5s;
    -o-transition: .5s;
    z-index: -1;
}

.nav li.on>a:after,
.nav li:hover>a:after {
    width: 30px;
    opacity: 1;
    background-color: #fff;
}
.nav li.on>a,
.nav li:hover>a {
    color: #fff;
    font-weight: bold;
}

.nav li dl {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0 -22px;
    z-index: 999;
    background: #FFFFFF;
    box-shadow: 0px 2px 6px 1px #666;
    padding: 25px 0;
}

.nav li:hover dl {
    display: block;
}

.nav li dl:after {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    margin-left: -10px;
    width: 15px;
    height: 15px;
    background-color: #fff;
    transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    z-index: -1;
}
.nav li dl dd a {
    display: block;
    font-size: 18px;
    text-align: center;
    height: 45px;
    line-height: 45px;
    color: #303133;
    transition: .5s;
    -ms-transition: .5s;
    -moz-transition: .5s;
    -webkit-transition: .5s;
    -o-transition: .5s;
    text-indent: 0;
}
.nav li dl dd a:hover {
    color: #1B53A4;
    font-weight: bold;
}
@media screen and (max-width: 750px){
    .header .logo img.mobile-view{
        display: inline-block;
    }
}