* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
}
.header {
    width: 100%;
    height: 75px;
}
.header #contain {
    width: 1260px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}
.header #contain #logo{
    width: 149px;
    height: 45px;
    float: left;
    background: url('./images/soso.png');
    background-position:217px 123px;
    margin-top: 15px;
}
.header #contain #nav{
    width: 352px;
    height: 100%;
    float: left;
    margin-left: 68px;
    line-height: 75px;
    position: relative;
} 
.header #contain #nav ul {
    overflow: hidden;
}
.header #contain #nav ul li {
    float: left;
    margin-left: 28px;
}
.header #contain #nav ul li a {
    color: #000;
    font-size: 16px;
}

.header #contain #nav ul li:first-child a {
    color: #31ccff;
}
.header #contain #nav ul li:first-child {
    margin-left: 0;
}
.header #contain #nav ul li:hover a {
    color: #31ccff;
}
.header #contain #nav #tips {
    width: 37px;
    height: 14px;
    background-color: #f5f7f9;
    border-radius: 8px;
    border: solid 1px #dddddd;
    text-align: center;
    line-height: 13px;
    font-size: 12px;
    color: #999999;
    position: absolute;
    top: 15px;
    right: 14px;
}
.header #contain #btn{
    width: 112px;
    height: 38px;
    float: right;
    color: #fff;
    text-align: center;
    line-height: 38px;
    font-size: 16px;
    background: #1ebcf0;
    border-radius: 4px;
    border:1px solid #1ebcf0;
    margin-top: 17px;
    margin-right: 8px;
}
.header #contain #btn:hover {
    background: #31ccff;
}
.main #banner {
    width: 100%;
    height: 482px;
    background: url('./images/banner.jpg') no-repeat;
    background-position: center;
}
.main #banner #inp {
    width: 692px;
    height: 58px;
    background: rgba(0, 0, 0, .1);
    position: absolute;
    top: 215px;
    left: 287px;
    overflow: hidden;
    border-radius: 3px;
    padding: 4px 3px;
}
.main #banner #inp input {
    float: left;
    width: 588px;
    height: 50px;
    background: rgba(255,255,255,.88);
    border: 1px solid #ccc;
    outline: none;
    border-top-left-radius: 3px;
    border-bottom-left-radius: 3px;
    font-size: 16px;
    padding: 10px 20px;
}
.main #banner #inp img {
    float: left;
    width: 97px;
    height: 50px;
}
.main #banner #contain {
    width: 1260px;
    height: 100%;
    margin: 0 auto;
    position: relative;
}
.main #mode1 {
    width: 1260px;
    height: 388px;
    overflow: hidden;
    margin: 60px auto 0;
}
.main #mode1 #part{
    width: 290px;
    height: 288px;
    float: left;
    margin-left: 33px;
    margin-top: 50px;
}
.main #mode1 #part:first-child {
    margin-left: 0;
}

.main #mode1 #part #picture {
    width: 290px;
    height: 200px;
    position: relative;
}
.main #mode1 #part #picture img {
    width: 290px;
    height: 200px;
}

.main #mode1 #part p {
    width: 100%;
    height: 48px;
    margin-top: 41px;
    overflow: hidden;
}

.main #mode1 #part p span {
    width: 140px;
    height: 48px;
    font-size: 14px;
    text-align: center;
    line-height: 48px;
    color: #666;
    float: left;
    border-radius: 2px;
    border: 1px solid #dfdfdf;
}
.main #mode1 #part p span:hover {
    color:#1ebcf0;
}
.main #mode1 #part p span:last-child {
    float: right;
}

.main #mode1 #part #picture #title {
    width: 100%;
    height: 50px;
    color: #fff;
    text-align: center;
    position: absolute;
    top: 150px;
    left: 0;
    line-height: 50px;
    /* z-index: 2; */
    background: rgba(0,0,0,.5);
    display: none;
}

.main #mode1 #part #picture:hover #title {
    display: block;
}

.main #mode2 {
    width: 100%;
    height: 608px;
    background: #f6f6f6;
}
.main #mode3 {
    width: 100%;
    height: 286px;
}