body {
    font-family: "微软雅黑";
}

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

nav {
    background: #0285c3;
}

.introduce img {
    width: 516px;
}

.introduce > div {
    width: 1220px;
    margin: 0 auto;
    padding: 65px 0;
}

.introduce .left {
    float: left;
    width: 50%;
    padding: 0 50px;
    box-sizing: border-box;
}

.introduce .right {
    float: right;
    width: 50%;
    color: #535353;
}

.introduce .right h2 {
    font-size: 30px;
    position: relative;
    width: 6em;
    margin-bottom: 22px;
}

.introduce .right > span {
    color: #fff;
    display: inline-block;
    width: 200px;
    text-align: center;
    line-height: 48px;
    font-size: 14px;
    border-radius: 10px;
}

.introduce .right > span:first-of-type {
    background: #0285c3;
    margin-left: 8%;
    margin-right: 5%;
}

.introduce .right > span:nth-of-type(2) {
    background: #ff7200;
}

.introduce .right h2 span {
    font-size: 14px;
    position: absolute;
    right: 0;
    top: 5px;
}

.introduce .right p {
    font-size: 14px;
    margin-bottom: 38px;
    width: 90%;
}

.banner img {
    width: 100%;
}

/*be_good_at*/
.be_good_at {
    padding-top: 64px;
    padding-bottom: 94px;
    background: #f2f2f2;
}

.be_good_at div {
    width: 1220px;
    margin: 0 auto;
}

.be_good_at h3 {
    text-align: center;
    margin-bottom: 54px;
    font-size: 30px;
    color: #535353;
}

.be_good_at li {
    float: left;
    width: 16%;
    margin-right: 5%;
}

.be_good_at li:last-of-type {
    margin: 0;
}

.banner2 {
    padding: 82px 0 90px 0;
}

.banner2 > div {
    width: 1220px;
    margin: 0 auto;
    text-align: center;
}

.banner2 > div h3 {
    margin-bottom: 53px;
    color: #535353
}

.more {
    display: block;
    border: 1px solid #ccc;
    width: 200px;
    line-height: 40px;
    margin: 65px auto 0 auto;
    color: #535353
}

.banner2 > div img {
    width: 90%;
}

.teacher {
    background: url("./images/back.png") no-repeat;
    padding: 38px 0 0 0;
}

.teacher > div {
    width: 1220px;
    margin: 0 auto;
    text-align: center;
    color: #fff;
}

.teacher > div > h3 {
    font-size: 30px;
    margin-bottom: 10px;
}

.teacher > div > span {
    margin-bottom: 20px;
    display: block;
}

.teacher > div > div {
    font-size: 14px;
    width: 90%;
    margin: 0 auto;
}

.teacher > div > div img {
    margin: 0 auto 20px auto;
    display: block;
}

.teacher > div > div p, .teacher > div > div ul {
    margin-left: 10px;
}

.teacher > div > div div {
    margin-bottom: 33px;
    width: 90%;
}

.teacher > div > div h3 {
    font-size: 20px;
    margin-bottom: 37px;
}

.teacher > div .left {
    float: left;
    width: 50%;
    text-align: left;
}

.teacher > div .right {
    float: right;
    width: 50%;
    text-align: left;
}

.test {
    background: #f2f2f2;
    padding-top: 67px;
    padding-bottom: 118px;
}

.test h3 {
    font-size: 30px;
    text-align: center;
    color: #535353;
    margin-bottom: 40px;
}

.test > div {
    width: 1220px;
    margin: 0 auto;
}

.test ul li {
    float: left;
    margin-right: 19px;
}

.test ul li:last-of-type {
    margin: 0;
}

.service {
    text-align: center;
    padding: 77px 0;
}

.bottom {
    width: 100%;
min-width:1200px;
    position: relative;
}

.bottom img {
    width: 100%;
    display: block;
min-width:1200px;
}

.from_content {
    position: absolute;
    bottom: 20%;
    right: 34%;
    cursor: pointer;
width:20%;
}

.from_content input {
    width: 100%;
    line-height:29px;
    margin-bottom: 10px;
    border: none;
    outline: none;
    text-indent: 1em;

}

.from_content a {
    background: #fff100;
    display: inline-block;
    width:100%;
    text-align: center;
    line-height: 29px;
    color: #535353;
}

/*公共样式*/
.clearfix::after {
    content: '';
    height: 0;
    visibility: hidden;
    clear: both;
    display: block;
}

.join_in img {
    width: 100%;
    min-width: 1220px;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}