* {
    margin: 0px;
    padding: 0px;
}

body {
    background-color: #f3f5f7;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

.w {
    width: 1200px;
    margin: 0 auto;
}

.header {
    height: 42px;
    background-color: transparent;
    margin: 30px auto;
}

.logo {
    float: left;
    margin-right: 60px;
    width: 198px;
    height: 42px;
    background-image: url(../images/logo.png);
}

.nav {
    float: left;
}

.nav ul li {
    float: left;
    margin: 0px 15px;
}

.nav ul li a {
    display: block;
    height: 42px;
    padding: 0 10px;
    line-height: 42px;
    font-size: 18px;
    color: #050505;
}

.nav ul li a:hover {
    border-bottom: 2px solid #00a4ff;
    color: #00a4ff;
}

.search {
    float: left;
    margin-left: 70px;
    width: 412px;
    height: 42px;
    background-color: skyblue;
}

.search input {
    width: 345px;
    height: 40px;
    border: 1px solid #00a4ff;
    float: left;
    border-right: 0px;
    color: #bfbfbf;
    font-size: 14px;
    padding-left: 15px;
}

.search input:focus {
    outline: none;
}

.search button {
    width: 50px;
    height: 42px;
    float: left;
    background-image: url(../images/btn.png);
    border: 0px;
}

.user {
    float: right;
    line-height: 42px;
    height: 42px;
    margin-right: 30px;
    font-size: 14px;
    color: #666;
}

.banner {
    height: 421px;
    background-color: #1c036c;

}

.banner .w {
    height: 421px;
    background-image: url(../images/banner2_20190819_210028.png);
    background-repeat: no-repeat;
    background-position: top center;
}

.banner .w .subnav {
    float: left;
    width: 190px;
    height: 421px;
    background-color: rgba(0, 0, 0, 0.3);
}

.subnav ul li {
    height: 45px;
    line-height: 45px;
    margin: 0px 20px;
}

.subnav ul li a {
    display: block;
    font-size: 14px;
    color: #fff;
}

.subnav ul li a:hover {
    color: #00a4ff;
}

.subnav ul li a span {
    float: right;
}

.banner .w .course {
    float: right;
    width: 230px;
    height: 300px;
    background-color: #fff;
    margin-top: 50px;
}

.banner .w .course h2 {
    height: 48px;
    background-color: #9bceea;
    line-height: 48px;
    text-align: center;
    font-size: 18px;
    color: #fff;
}

.banner .w .course .bd {
    padding: 0px 20px;
}

.banner .w .course .bd ul li h4 {
    font-size: 16px;
    color: #4e4e4e;
}

.banner .w .course .bd ul li p {
    font-size: 12px;
    color: #a5a5a5;
}

.banner .w .course .bd ul li {
    padding: 14px 0px;
    border-bottom: 1px solid #ccc;
}

.banner .w .course .bd .more {
    display: block;
    height: 38px;
    border: 1px solid #00a4ff;
    line-height: 38px;
    text-align: center;
    color: #00a4ff;
    font-size: 16px;
    font-weight: 700px;
    margin-top: 5px;
}

.goods {
    margin-top: 10px;
    height: 60px;
    background-color: #fff;
    box-shadow: 0px 2px 1px 1px rgba(0, 0, 0, 0.1);
    line-height: 60px;
}

.goods h3 {
    float: left;
    margin-left: 30px;
    font-size: 16px;
    color: #00a4ff;
}

.goods ul {
    float: left;
    margin-left: 30px;
}

.goods ul li {
    float: left;
}

.goods ul li a {
    padding: 0px 30px;
    font-size: 15px;
    color: #050505;
    border-left: 1px solid #ccc;
}

.goods>a {
    float: right;
    margin-right: 30px;
    font-size: 14px;
    color: #00a4ff;
}

.box {
    margin-top: 30px;
}

.box .box-hd {
    height: 45px;
}

.box-hd h3 {
    float: left;
    font-size: 20px;
    color: #494949;
}

.box-hd a {
    float: right;
    font-size: 12px;
    color: #a5a5a5;
    margin-top: 10px;
    margin-right: 30px;
}

.box-bd ul {
    width: 1225px;
}

.box-bd ul li {
    width: 228px;
    height: 270px;
    background-color: transparent;
    float: left;
    margin-right: 15px;
    margin-bottom: 15px;
}

.box-bd ul li img {
    width: 100%;
}

.box-bd ul li h4 {
    margin: 20px 20px 20px 25px;
    font-size: 14px;
    color: #050505;
    font-weight: 400;
}

.box-bd .info {
    margin: 0 20px 0 25px;
    font-size: 12px;
    color: #999999;
}

.box-bd .info span {
    color: #ff7c2d;
}

.footer {
    background-color: #fff;
    height: 415px;
    overflow: hidden;
}

.clearfix:before,
.clearfix:after {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}

.clearfix {
    *zomm: 1;
}

.footer .w {
    margin-top: 35px;
}

.footer .copyright {
    float: left;
}

.footer .links {
    float: right;
}

.copyright p {
    margin: 20px 0px 15px 0px;
    font-size: 12px;
    color: #666;
}

.copyright a {
    display: block;
    width: 118px;
    height: 33px;
    border: 1px solid #00a4ff;
    text-align: center;
    line-height: 33px;
    color: #00a4ff;
    font-size: 16px;
}

.footer .links dl dt {
    font-size: 16px;
    color: #333;
    margin-bottom: 3px;
}

.footer .links dl dd a {
    font-size: 12px;
    color: #333;
}

.footer .links dl {
    float: left;
    margin-left: 100px;
}