* {
    margin: 0px;
    padding: 0px;
    list-style: none;
}

/* 导航栏 */
header {
    position: fixed;
    top: 0px;
    width: 100%;
    height: 70px;
    background-color: #012B86;
    color: #fff;
}

/* 超链接 */
nav {
    position: relative;
    width: 1140px;
    margin: 0 auto;
    line-height: 60px;
}

nav ul {
    float: right;
}

nav ul li {
    display: inline-block;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    padding-left: 30px;
    padding-right: 30px;
    height: 70px;
    display: inline-block;
}

nav ul li a:hover {
    background-color: #fff;
    color: #012B86;
}

/* logo */
#logo {
    position: absolute;
    left: 0px;
    height: 50px;
    top: 10px;
}

/* banner图 */
#banner {
    margin-top: 70px;
    width: 100%;
    height: 700px;
    background: url(../images/banner.png) no-repeat;
    background-size: cover;
}

#banner_main {
    width: 1140px;
    margin: 0 auto;
    padding-top: 200px;
    color: #fff;
}

#banner_main h1 {
    letter-spacing: 10px;
    width: 1140px;
    margin: 0 auto;
}

#banner_main h1 span {
    font-size: 20px;
}

#banner_main p {
    line-height: 30px;
    letter-spacing: 5px;
}

.clear {
    width: 400px;
    height: 1px;
    background-color: #fff;
    margin-top: 10px;
}

/* 介绍 */
#jieshao_main {
    width: 1140px;
    margin: 0 auto;
    margin-top: 50px;
}

#jiehsao_first {
    width: 100%;
    height: 330px;
}

h2 {
    font-size: 30px;
    letter-spacing: 4px;
    font-weight: 500;
}

#jiehsao_first p {
    width: 310px;
    line-height: 30px;
    letter-spacing: 4px;
    margin-top: 20px;
}

#jiehsao_first img {
    float: right;
    width: 400px;
    height: 330px;
}

/* 荣誉 */
#rongyu {
    height: 700px;
    background-color: #2561A1;
    margin-bottom: 70px;
}

#rongyu img {
    width: 570px;
    height: 700px;
    float: left;
}


#xunzhang {
    display: inline-block;
    box-sizing: border-box;
    height: 700px;
    width: 570px;
    padding: 56px;
}

#xunzhang h3 {
    color: #fff;
    font-size: 30px;
}

#xunzhang p {
    margin-top: 10px;
    height: 112px;
    overflow: hidden;
    letter-spacing: 2px;
    margin-bottom: 42px;
}

#xunzhang p:last-child {
    margin-bottom: 0px;
}

/* 业务 */
#yewu {
    width: 100%;
    padding: 70px 0px;
    background-image: url(../images/bg1.png);
    background-size: cover;
}

#yewu h1 {
    text-align: center;
    color: black;
    margin-bottom: 70px;
}

.yewu_li {
    flex-wrap: wrap;
    display: flex;
}

.yewu_li li {
    width: 25%;
    box-sizing: border-box;
    padding: 56px 70px;
    background-color: rgba(255, 255, 255, 0.568);
    line-height: 30px;
}

.yewu_li li:nth-child(1) {
    background-color: #2561a196;
}

.yewu_li li:nth-child(2) {
    background-color: #0ca2cf9e;
}

.yewu_li li:nth-child(3) {
    background-color: rgba(47, 125, 156, 0.753)
}

.yewu_li li:nth-child(4) {
    background-color: #f6b000bd;
}

.yewu_li li h3 {
    font-size: 24px;
    color: #fff;
}

.yewu_li li p {
    margin-top: 10px;
}

/* 留言板块 */
#liuyan {
    padding: 70px 0px;
    width: 1140px;
    text-align: center;
    margin: 0 auto;
}

#liuyan h3 {
    margin-top: 20px;
    color: #2561A1;
    margin-bottom: 20px;
}

#biaodan {
    display: inline-block;
}

#biaodan form {
    text-align: left;
}

#biaodan input {
    width: 500px;
    height: 30px;
    border: 1px solid #2561A1;
    background-color: #2561A1;
    color: #fff;
    padding: 10px;
    border-radius: 4px;
}

#biaodan textarea {
    width: 500px;
    height: 130px;
    margin-top: 10px;
    text-align: left !important;
    border: 1px solid #2561A1;
    background-color: #2561A1;
    padding: 10px;
    color: #fff;
    border-radius: 4px;
}

footer {
    height: 70px;
    background-color: black;
    color: #ffff;
    line-height: 70px;
}

#footer {
    width: 1140px;
    position: relative;
    margin: 0 auto;
}

#footer img {
    position: absolute;
    height: 50px;
    top: 10px;
    right: 0px;
}