html,body{
    width:100%;
    height: 100%;
    /* overflow:hidden; */
    min-width: 1280px;
}
html,body,ul,li{
    margin:0;
    padding:0;
}
a{
    text-decoration:none;
}
ul li{
    list-style-type:none;
}
/* 首页容器 */
#content{
    margin:0 auto;
    width:100%;
    position: relative;
}
/* -------------------------header---------------------------------- */
#header{
    width:100%;
    position: relative;
    margin-top: 0.3%;
}
/* logo */
#header>.logo{
    float: left;
    width:11.4%;
    height: 71.56%;
    margin-left: 4.32%;
    margin-top: 1.39%;
}

/* 导航条 */
#header>ul{
    float: left;
    width:57.2%;
    height: 17.63%;
    position: relative;
    left: 8%;
    margin-top: 1.63%;
}
#header>ul li{
    display: inline-block;
    padding:0 2px;
    left: 5%;
    margin-left: 3%;
}
#header>ul li:first-child{
    margin-left: 0;
}

#header>ul a{
    display: inline-block;
    width: 100%;
    height: 100%;
    text-indent: left;
    color:#666666;
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: normal;
    letter-spacing: 50;
    line-height: 40px;
}
.active{
    text-indent: left;
    color:#0FCDDD;
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: bold;
    letter-spacing: 50;
    line-height: 40px;
    border-bottom: solid 3px #0FCDDD;
}

/* 中英文切换 */
#header>span{
    float: left;
    width:10%;
    height: 12.84%;
    font-size: 14px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #666666;
    line-height: 40px;
    position: relative;
    left: 15.68%;
    margin-top: 1.57%;
}
#header>span>a{
    color:#666666;
}

#header>span>a>img{
    margin-left: 5%;
}

.dropdown-content {
    margin-left: -40px;
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    width: 180px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    padding: 10px 14px;
    z-index: 9999;
}
.dropdown-content a{
    width: 100%;
    text-align: center;
}

#header li:nth-child(4):hover .dropdown-content {
    display: block;
}

/* -------------------------footer---------------------------------- */
#footer{
    margin-top: -1%;
    width:100%;
    position: relative;
    float: left;
    display: flex;
    justify-content: center;
}
#footer span{
    position: relative;
    width: 100%;
    text-align: center;
    font-size: 12px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #666666;
    line-height: 70px;
}