* {
    margin: 0;
    padding: 0;
}

body {
    font-family: '宋体';
    color: rgb(76, 76, 76);
    background-color: #e9f3f7;
}

#aa {
    height: 100px;
    background-color: white;
}

#bb {
    width: 1100px;
    height: 100px;
    margin: auto;
    color: white;
    line-height: 100px;
}

.logo {
    text-align: center;
    font-size: 70px;
    font-family: '方正舒体';
    color: #445D73;
}

#dd {
    width: 100%;
    height: 400px;
    background: url(../images/bg1.png);
    background-size: 100% 100%;
}

.tip {
    width: 1100px;
    margin: auto;
    color: white;
    font-size: 38px;
    line-height: 100px;
    padding-top: 100px;
}

.clear {
    clear: both;
}

#uu {
    text-align: center;
    line-height: 60px;
    background-color: gainsboro;
}

.banner2 {
    width: 100%;
    height: 250px;
    background: url(../images/banner2.png);
    background-size: 100% 100%;
} 

.btn {
    text-align: center;
    margin: 50px auto;
}

.btn button {
    background-color: #2C3E50;
    color: white;
    padding: 20px 60px;
    margin: 0 20px;
    border-radius: 20px;
}

#ee {
    width: 1100px;
    height: 550px;
    margin: 50px auto;
    background-color: white;
}

#ff {
    padding: 40px;
    width: 52%;
    float: left;
}

.tit {
    width: 100px;
    text-align: center;
    line-height: 30px;
    background-color: rgb(45, 45, 45);
    font-size: 14px;
    color: white;
    margin-bottom: 10px;
}

#ee h1 {
    font-size: 24px;
    line-height: 80px;
}

p {
    line-height: 1.6;
    margin-bottom: 30px;
}

.button {
    display: inline-block;
    background-color: #A9CDE3;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.button:hover {
    background-color: #7ca4bd;
}

#gg {
    width: 40%;
    float: right;
    position: relative;
}

#gg img {
    width: 100%;
    height: 550px;
}

#ii {
    width: 1100px;
    height: 200px;
    background-color: white;
    margin: 50px auto;
}

#jj {
    float: left;
    margin: 50px 0;
    margin-left: 50px;
}

#kk {
    width: 600px;
    margin: 70px 0;
    float: right;
    margin-right: 50px;
    line-height: 60px;
}

#ll {
    width: 1100px;
    height: 400px;
    margin: 50px auto;
}

#mm,
#oo,
#qq,
#ss {
    color: #385c73;
    float: left;
    width: 240px;
    margin:0 7px;
    background-color: white;
    padding: 10px;
    height: 350px;
    position: relative;
}

#mm img,
#oo img,
#qq img,
#ss img {
    width: 100%;
    height: 150px;
}

#nn,
#pp,
#rr,
#tt {
    line-height: 60px;
    font-weight: 900;
    font-size: 20px;
}

.image {
    position: relative;
    overflow: hidden;
}

.image img {
    width: 100%;
    display: block;
}

.image-container {
    overflow: hidden;
}

#hh {
    width: 100%;
    height: 200px;
}

.detail {
    width: 1000px;
    margin: auto;
    margin-top: 50px;
    background-color: white;
    padding: 50px;
}

.detail h2 {
    text-align: center;
    line-height: 80px;
    border-bottom: 1px solid rgb(105, 105, 105);
}

.detail p {
    margin-top: 20px;
    text-indent: 2em;
}

.yange {
    width: 400px;
    float: right;
    margin-left: 20px;
}

.detail table {
    width: 90%;
    margin: 50px auto;
    border-collapse: collapse;
}

.detail table th {
    padding: 10px;
    background-color: gainsboro;
}

.detail table td {
    padding: 20px;
}

.quhua {
    text-align: center;
}

.detail h3 {
    margin-top: 30px;
}

.td1 img {
    width: 400px;
    height: 300px;
}

.td2 {
    background-color: #E9F3F7;
    font-size: 30px;
    line-height: 50px;
}

.td2 p {
    padding: 20px 50px;
    font-style: italic;
    color: gray;
    font-weight: 900;
}

.td3 {
    text-align: center;
}

.td4 img {
    width: 100%;
    height: 200px;
}