* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
}
/* 主体给宽不给高 */
#contain {
    width: 100%;
}
/* 头部样式 */
#header {
    width: 1260px;
    height: 75px;
    margin: 0 auto;
    overflow: hidden;
}
#header .logo {
    width: 149px;
    height: 45px;
    float: left;
    margin-top: 18px;
    background: url("../images/soso.png");
    background-position: -207px 0px
}
#header .nav {
    width: 352px;
    height: 75px;
    float: left;
    margin-left: 70px;
    line-height: 75px;
    position: relative;
}
#header .nav ul {
    overflow: hidden;
}
#header .nav ul li {
    float: left;
    margin-left: 33px;
}
#header .nav ul li:first-child {
    margin-left: 0;
}
#header .nav ul li:first-child a {
    color: #31ccff;
}
#header .nav ul li a {
    color: #000;
    font-size: 16px;
}
#header .nav ul li a:hover {
    color:#31ccff;
}
#header .nav .btn {
    width: 37px;
    height: 14px;
    color: #999999;
    background-color: #f5f7f9;
    border-radius: 8px;
    border: solid 1px #dddddd;
    text-align: center;
    line-height: 13px;
    font-size: 12px;
    position: absolute;
    top: 10px;
    right: 2px;
}
#header .login {
    width: 102px;
    height: 38px;
    float: right;
    margin-right: 10px;
    margin-top: 18px;
    border-radius: 3px;
    color: #fff;
    text-align: center;
    line-height: 38px;
    font-size: 16px;
    background: #1ebcf0;
}
#main {
    width: 100%;
}
#main .banner {
    width: 1920px;
    height: 482px;
    margin: 0 auto;
}
#main .banner .site {
    width: 1260px;
    height: 100%;
    margin:  -488px auto 0;
    position: relative;
    /* 开启定位后  */
    z-index: 9;
    /* z-index: 999; */
}
#main .banner img {
    width: 1920px;
    height: 100%;
}
#main .banner .search {
    width: 692px;
    height: 58px;
    background: rgba(0,0,0,.2);
    overflow: hidden;
    position: absolute;
    top: 221px;
    left: 288px;
    /* margin: 0 auto; */
    padding:4px 2.5px;
    border-radius: 3px;
}
#main .banner .search input{
    width: 588px;
    height: 50px;
    float: left;
    font-size: 14px;
    padding: 10px;
    outline: none;
    border: 1px solid #adadad;
    border-top-left-radius: 3px;
    border-bottom-left-radius: 3px;
    /* background: #f00; */
}
#main .banner .search img{
    width: 98px;
    height: 50px;
    float: left;
    /* background: #f00; */
}
#main .card {
    width: 1260px;
    height: 450px;
    margin: 0 auto;
    overflow: hidden;
    padding-top: 108px;
}
#main .card .news {
    width: 290px;
    height: 100%;
    float: left;
    margin-left: 33px;
    position: relative;
}
#main .card .news:first-child {
    margin-left: 0;
}
#main .card dl {
    width: 290px;
    height: 250px;
}
#main .card dl dt{
    width: 290px;
    height: 200px;
}
#main .card dl dt img {
    width: 100%;
    height: 100%;
}
#main .card dl dd {
    overflow: hidden;
    margin-top: 37px;
}
#main .card dl dd p {
    width: 140px;
    height: 48px;
    color: #666;
    font-size: 12px;
    float: left;
    border:1px solid #dfdfdf;
    text-align: center;
    line-height: 48px;
}
#main .card dl dd p:last-child {
    float: right;
}
#main .card dl dd p:hover {
    color: #31ccff;
}
#main .card .news .title {
    width: 100%;
    height: 50px;
    color: #fff;
    text-align: center;
    line-height: 50px;
    font-size: 16px;
    position: absolute;
    top:151px;
    left: 0;
    display: none;
    background: rgba(0,0,0,.4);
}
#main .card .news dl dt:hover .title {
    display: block;
}
#main .area {
    width: 100%;
    height: 500px;
    background: #ff0;
}
#main .area .contain {
    width: 1260px;
    height: 100%;
    background: #00f;
    margin: 0 auto;
}