* {
  margin: 0;
  padding: 0;
}
html,
body {
  background: #f7f8fa;
}
.content {
  position: relative;
}
.nav {
  width: 100%;
  height: 70px;
  background: #fff;
}
.nav .header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  line-height: 70px;
  background: #fff;
  z-index: 9999;
}
.nav .header .fixation {
  position: absolute;
  width: 1200px;
  max-width:1200px;
  left: 50%;
  transform: translateX(-50%);
  /* background: red; */
}
.nav .header .fixation button{
  position: absolute;
  top: 50%;
  right:0;
  width: 61px;
  height: 32px;
  border:1px solid #ff7f24;
  color:#ff7f24;
  background: transparent;
  border-radius: 3px;
  transform: translateY(-50%);
}
.nav .logo {
  float: left;
  width: 80px;
  height: 70px;
}
/* .nav .logo img {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
} */
.main_contents{
    width: 100%;
    height: 1000px;
}
.nav .logo p {
  width: 80px;
  text-align: center;
  float: right;
  color: #666666;
}
.fixation > ul {
  float: left;
  list-style: none;
}
.fixation > ul > li {
  width: 80px;
  text-align: center;
  float: left;
}
.fixation > ul > li > a {
  color: #333;
  text-decoration: none;
}
.fixation > ul > li > a:hover {
  color: #ff7f24;
}
.fixation > ul > li > a:click {
  color: red;
}
.banner {
  width: 100%;
  height: 500px;
}
.banner img {
  width: 100%;
  height: 460px;
}
.center {
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  width: 1200px;
  height: 800px;
}
.center .title {
  position: relative;
  width: 100%;
  height: 30px;
  vertical-align: middle;
}
.center .title span {
  position: absolute;
  top: 3px;
}
.center .main {
  width: 100%;
  height: 300px;
}
.center .main ul,
li {
  margin: 0;
  padding: 0;
  list-style: none;
}
.center .main li {
  width: 280px;
  height: 350px;
  float: left;
  margin-bottom: 24px;
  background: #fff;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.center .main li:nth-child(4n-2) {
  margin-left: 24px;
}
.center .main li:nth-child(4n-1) {
  margin-left: 24px;
  margin-right: 24px;
}
.center .main li img {
  width: 100%;
}
.center .main li > div {
  width: 343px;
  height: 160px;
  background: #fff;
  position: absolute;
  bottom: 0px;
  padding: 10px;
  box-sizing: border-box;
}
.center .main li > div p{
  width: 100%;
  position: absolute;
  bottom: 68px;
  height: 30px;
  line-height: 10px;
}
.center .main li > div p img{
  width: 30px;
  height: 30px;
}
.center .main li > div p span{
  position: absolute;
  top: 10px;
  left: 40px;
}
.center .main li > div>div{
  width: 72%;
  position: absolute;
  bottom: 25px;
  display: flex;
  justify-content: space-between;
  color:#999999;
}
.center .main li > div>div span:nth-child(2){
  color:#ff2d28;
  font-weight: 600;
}
.center .main h3{
  font-size: 16px;
}
.centerTeacher{
    position: relative;
    left: 50%;
    width: 1200px;
    height: 1050px;
    transform: translateX(-50%);
}
.centerTeacher img{
    width: 587px;
    margin-top: 25px;
}
.centerTeacher li:nth-child(odd) img{
    margin-right: 25px;
}
.centerInfo{
    position: relative;
    left: 50%;
    width: 1200px;
    transform: translateX(-50%);
}
.centerInfo p{
    margin: 15px 0;
}
.centerInfo p span{
    color:#999999;
    margin-right: 8px;
}
.centerInfo p span:nth-child(3){
    color:#333;
}
.clear{
  clear:both;
}
.signUp{
    width: 100%;
    height: 334px;
    background: #fff;
    padding: 25px;
    box-sizing: border-box;
    position: relative;
}
.signUp img{
    width: 380px;
    float: left;
}
.signUp>div{
    position: absolute;
    left: 450px;
    font-size: 14px;
    width: 66%;
    height: 295px;
}
.signUp>div p{
    width: 90%;
    margin-top: 0;
}
.signUp>div p:nth-child(1){
    font-size: 20px;
}
.signUp>div p:nth-child(2),.signUp>div p:nth-child(3){
    color:#999;
}
.signUp>div p:nth-child(4){
    position: absolute;
    bottom: 60px;
    font-weight: 500;
    color: #ff2d28;
    font-size: 17px;
}
.signUp>div p:nth-child(5){
    position: absolute;
    bottom: 0;
}
.signUp>div p:nth-child(5) button{
    width: 144px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    color:#fff;
    border:none;
    background: #ff832a;
    font-size: 16px;
    border-radius: 20px;
    margin-right: 30px;
    cursor: pointer;
}
.signUp>div p:nth-child(5) span:nth-child(3){
    float: right;
    color:#ff832a;
}
.teacher{
    margin-top: 25px;
}
.teacher .left{
    width: 1198px;
    float: left;
}
.teacher .left .top{
    width: 100%;
    background: #fff;
    padding: 25px;
    box-sizing: border-box;
    font-size: 14px;
    margin-bottom: 25px;
}
.teacher .left .top p{
    margin-top: 0;
}
.teacher .left .top>p:nth-child(1){
    font-size: 18px;
}
.teacher .left .top img{
    width: 50px;
    height: 50px;
    margin-right: 15px;
    float: left;
}
.teacher .left .bottom>div{
  margin-top: 30px;
  padding-left: 30px;
}
.centerInfo .teacher .left .top .feng{
    margin-top: 15px;
    margin-bottom: 3px;
}
.centerInfo .teacher .left .top .desc{
    color:#999;
}
.centerInfo .teacher .left .bottom{
    width: 100%;
    /* height: 121px; */
    margin-bottom: 20px;
    background: #fff;
}
/* .centerInfo .teacher .left .bottom #imgBig{
  width: 751px;
} */
.teacher .right{
    width: 298px;
    height: 300px;
    float: left;
}
.teacher .right div{
    width: 100%;
    height:50px;
    line-height: 50px;
    padding-left: 25px;
    box-sizing: border-box;
    background: #fff;
}
.active{
    color:#ff7f24 !important;
    border-bottom: 3px solid #ff7f24;
}
.footer{
  position: relative;
  bottom: 0px;
  width: 100%;
  height: 153px;
  padding-top: 30px;
  color:#b3b3b3;
  box-sizing: border-box;
  text-align: center;
  background: #666666;
}
.footer p{
  margin-bottom: 15px;
}
.footer p img{
  margin-left: 30px;
}