.head {
    width: 100%;
    height: 878px;
    background-position: center;
    overflow: hidden;
}

.head-top-box {
    width: 100%;
    height: 75px;
    background: rgba(0, 0, 0, 0.4);
    font-size: 16px;
    color: #fff;
    line-height: 75px;
    overflow: hidden;
}

.head-top {
    position: relative;
    height: 100%;
    margin: auto;
}

.head-top-left {
    position: absolute;
    left: 5%;
    z-index: 999;
}

.top-l2 {
    margin-left: 40px;
}
.head-top-mid {
    position: absolute;
    left: 25%;
    width: 726px;
    height: 40px;
    background: url('../images/logo2.png') no-repeat;
    background-size: contain;
    background-position: center;
    margin: auto;
    margin-top: 20px;
    display: inline-block;
    text-align: center;
}

.head-top-rig {
    position: absolute;
    right: 5%;
}

.head-nav {
    width: 100%;
    height: 63px;
    background: rgba(0, 0, 0, 0.4);
    font-size: 16px;
    color: #fff;
    line-height: 63px;
    /* overflow: hidden; */
    border-top: 1px solid rgba(237, 239, 240, 0.1);
    position: relative;
}

.head-nav ul {
    width: 1200px;
    height: 100%;
    margin: auto;
}

.head-nav ul a {
    width: 13.5%;
    height: 100%;
    float: left;
}

.head-nav ul li {
    width: 100%;
    display: inline-block;
    color: #fff;
    border-left: 1px solid rgba(237, 239, 240, 0.1);
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.head-nav ul .avtive {
    background: rgba(223, 223, 223, 0.3);
}

.head-title {
    width: 1200px;
    /* height: 100%; */
    margin: auto;
    font-size: 50px;
    /* line-height: 2; */
    color: #fff;
    margin-top: 180px;
    text-align: center;
}

img {
   
    object-fit: cover;
    object-position: center;
}

.footer-box {
    width: 100%;
    height: 118px;
    padding: 20px 0;
}

.footer {
    width: 1200px;
    height: 100%;
    margin: auto;
    font-size: 16px;
    line-height: 2;
    text-align: center;
}

.footer-left {
    width: 112px;
    height: 40px;
    background: url('../images/logo1.png') no-repeat;
    background-size: contain;
    background-position: center;
    float: left;
    margin-top: 10px;
}

.footer-right {
    text-align: right;
    float: right;
}

.footer-right p {
    margin: 10px 0;
}

/* 下拉样式 */
.pull-down {
    position: absolute;
    left: 0;
    width: 100%;
    display: none;
    background: rgba(0, 0, 0, 0.4);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000, endColorstr=#66000000);
}

.pull-down-box {
    width: 1200px;
    margin: auto;
    padding-bottom: 48px;
}

.pull-down-div-box {
    float: left;
}

.pull-down-div-box div {
    min-width: 400px;
    height: 60px;
    color: #fff;
    padding-left: 24px;
}

.pull-down-div-box .default {
    background-color: #4A6388;
    color: #33CEFF;
}

.pull-down-div-twin {
    float: left;
}

.pull-down-div-twin div {
    min-width: 400px;
    height: 60px;
    color: #fff;
    padding-left: 24px;

}

.pull-down-div-twin .default2 {
    /* background-color: #fff; */
    /* background: rgba(255, 255, 255, 0.1); */
    background-color: #4A6388;
    color: #33CEFF;
}

.top-l1 {
    float: left;
    cursor: pointer;
}

.top-l2 {
    float: left;
    cursor: pointer;
    color: #33CEFF;
}

/* 处理浮动 */
.clear:after {
    content: '';
    display: block;
    clear: both;
    height: 0;
    overflow: hidden;
    visibility: hidden;
}

.clear {
    zoom: 1;
}