/* 清楚全局格式 */
* {
    margin: 0px;
    padding: 0px;
    list-style: none;
}

/* 头部固定导航栏 */
header {
    position: fixed;
    width: 100%;
    height: 80px;
    background-color: #386B5D;
    z-index: 999;
}

/* 导航栏 */
nav {
    position: relative;
    width: 1200px;
    margin: 0 auto;
    height: 80px;
}

/* logo */
#logo {
    position: absolute;
    width: 100px;
    text-align: center;
    background-color: #fff;
    padding: 30px 0px;
}

#logo img {
    width: 80px;
}

/* 导航栏 */
#first_title {
    margin-left: 120px;
}

#first_title>li {
    display: inline-block;
    float: left;
    height: 80px;
    line-height: 80px;
    width: 140px;
    text-align: center;
    transition: all 0.4s;
    overflow: hidden;
}

#first_title>li>a {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    height: 76px;
    width: 140px;
    font-weight: bold;
    font-size: 18px;
}

#first_title>li:hover .zixun {
    border-bottom: 4px solid rgb(252, 0, 0);
}

#first_title>li:hover .zixun {
    font-size: 20px;
}

#first_title>li:nth-child(2):hover {
    transition: all 0.4s;

    display: inline-block;
    float: left;
    height: 320px;
    line-height: 80px;
    width: 140px;
    text-align: center;
    background-color: #386B5D;
}

#first_title>li:nth-child(3):hover {
    transition: all 0.4s;
    display: inline-block;
    float: left;
    height: 400px;
    line-height: 80px;
    width: 140px;
    text-align: center;
    background-color: #386B5D;
}

#first_title>li:nth-child(4):hover {
    transition: all 0.4s;
    display: inline-block;
    float: left;
    height: 160px;
    line-height: 80px;
    width: 140px;
    text-align: center;
    background-color: #386B5D;
}

#littile_title {
    width: 100%;
}

#littile_title a {
    text-decoration: none;
    color: #fff;
}

/* 导航栏搜索按钮 */
#title_sousuo {
    position: absolute;
    right: 0px;
    top: 25px;
}

#title_sousuo input {
    width: 140px;
    height: 30px;
    border: 0px;
    border-radius: 13px;
    padding: 0px 10px;
    color: #386B5D;
    font-size: 14px;
}

#title_sousuo input:focus {
    outline: none
}

/* 导航栏结束 */
/* banner图片 */
#banner {
    width: 100%;
    font-size: 0px;
}

#banner img {
    width: 100%;
}

/* 中间内容区域 */
main {
    width: 1200px;
    margin: 0 auto;
}

/* 底部 */
footer {
    padding: 30px 0px;
    background-color: rgb(0, 0, 0);
}

#footer {
    margin: 0 auto;
    width: 1200px;
    color: #A8AAAB;
    padding-bottom: 10px;
    border-bottom: 1px solid #ccc;
}

#footer a {
    color: #A8AAAB;
    text-decoration: none;
    margin-left: 20px;
}

footer p {
    margin-top: 20px;
    color: #fff;
    text-align: center;
}

#footer a:hover {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
}