@import 'public.css';
.clearfix {
  display: block;
  content: '';
  clear: both;
}
nav {
  width: 100%;
  height: 80px;
  background: #fff;
  box-shadow: 0 2px 3px #dad6d6;
  vertical-align: top;
}
nav .main {
  width: 1180px;
  margin: 0 auto;
}
nav .main ul li:hover {
  background: #80C4AE;
  color: #fff;
}
nav .main ul li:hover a {
  color: #fff;
  font-size: 16px;
}
nav .logo {
  width: 179px;
  height: 53px;
  margin: 13px 0 14px 0;
}
nav ul {
  display: inline-block;
  margin-left: 120px;
  border: none;
  font-size: 0;
}
nav ul li {
  display: inline-block;
  width: 80px;
  height: 80px;
  line-height: 80px;
  margin-right: 17px;
  text-align: center;
}
nav ul li a {
  color: #333;
  font-size: 16px;
}
nav ul li:last-child {
  margin-right: 0;
}
nav div.search {
  display: inline-block;
  margin-left: 120px;
  border: 1px solid #80C4AE;
  border-radius: 3px;
  width: 280px;
  height: 36px;
  text-align: center;
  font-size: 0;
  padding: 0;
  overflow: hidden;
  vertical-align: middle;
  position: relative;
}
nav div.search .left {
  width: 69px;
  height: 36px;
  border-right: 1px solid #80C4AE;
  font-size: 14px;
  text-align: center;
  line-height: 36px;
  float: left;
  color: #80C4AE;
  padding: 0;
}
nav div.search .left i {
  margin-left: 6px;
  font-size: 5px;
}
nav div.search input {
  border: none;
  outline: none;
  display: inline-block;
  height: 36px;
  text-align: center;
  font-weight: 400;
  font-size: 14px;
}
nav div.search img {
  width: 20px;
  height: 20px;
  position: absolute;
  right: 7px;
  top: 8px;
}
nav .user {
  display: inline-block;
  margin-left: 24px;
}
nav .user img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
}
nav .main .user {
  position: relative;
}
nav .main .user .userlist {
  width: 122px;
  height: 269px;
  background: url('../img/login/jx.png') no-repeat;
  background-size: cover;
  position: absolute;
  top: 35px;
  right: -15px;
  display: none;
  z-index: 99999;
}
nav .main .user .userlist ul {
  width: 122px;
  height: 100%;
  padding-top: 30px;
  margin-left: 0;
}
nav .main .user .userlist ul li {
  font-size: 16px;
  color: #333;
  line-height: 30px;
  height: 40px;
  text-align: center;
  width: 100%;
  cursor: pointer;
}
nav .main .user .userlist ul li:hover {
  background: none;
}
nav .main .user .userlist ul li:last-child {
  color: #666;
}
nav .main .user:hover .userlist {
  display: block;
}
main {
  width: 1180px;
  margin: 0 auto;
  height: 736px;
  margin-top: 30px;
}
main .leftNav {
  width: 220px;
  height: 451px;
  background: #FFFFFF;
  box-shadow: 0px -1px 3px 3px rgba(0, 0, 0, 0.03);
  border-radius: 4px;
  float: left;
  cursor: pointer;
}
main .leftNav > ul {
  padding: 25px 0px;
}
main .leftNav>ul>li .class {
  background: url(../img/userSet/set_01.jpg) 17px center no-repeat;
}
main .leftNav > ul > li .order {
  background: url(../img/userSet/set_03.jpg) 17px center no-repeat;
}
main .leftNav > ul > li .money {
  background: url(../img/userSet/set_02.jpg) 17px center no-repeat;
}
main .leftNav > ul > li .center {
  background: url(../img/userSet/set_04.jpg) 17px center no-repeat;
}
main .leftNav > ul > li > p {
  display: block;
  width: 100%;
  position: relative;
  padding-left: 60px;
  padding-top: 10px;
  padding-bottom: 10px;
}
main .leftNav > ul > li > p span {
  display: block;
  font-size: 14px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
}
main .leftNav > ul > li > p i {
  position: absolute;
  right: 40px;
  top: 10px;
}
main .leftNav > ul > li ol > li {
  padding-left: 60px;
  margin-top: 5px;
  font-size: 12px;
  color: #666666;
  height: 25px;
  line-height: 25px;
}
main .leftNav > ul > li ol .active {
  color: #80C4AE;
}
main .rightUser {
  float: left;
  padding-top: 25px;
  padding-left: 30px;
}
main .rightUser .title_top {
  height: 50px;
  line-height: 50px;
}
main .rightUser .title_top span {
  display: inline-block;
}

/* 列表 */
.lesson{
  width: 930px;
}
.lesson ul li{
  width: 440px;
  height: 256px;
  box-shadow: 0 2px 5px #dad6d6;
  background: #fff;
  position: relative;
  overflow: hidden;
  margin: 0 30px 30px 0;
  float: left;
  cursor: pointer;
}
.lesson ul li:nth-child(2n){
  margin-right: 0;
}


.lesson ul li .top {
  width: 440px;
  height: 196px;
  vertical-align: top;
  overflow: hidden;
}
.lesson ul li .top img{
  width: 100%;
  height: 100%;
}
.lesson ul li .top p{
    position: absolute;
    bottom: 60px;
    left: 0;
    width: 100%;
    height: 33px;
    line-height: 33px;
    font-size: 14px;
    background: #000000;
    color: #fff;
    padding-left: 10px;
    opacity: 0.3;
}

.lesson ul li .bottom {
  width: 100%;
  height: 62px;
  overflow: hidden;
  line-height: 20px;
  font-size: 14px;
  color: #333;
  margin-top: 7px;
  padding-left: 14px;
}
.lesson .bottom span{
  display: block;
}
.lesson .bottom span.time {
  margin-top: 5px;
  font-size: 14px;
  line-height: 17px;
  color: #7A7A7A;
}
.lesson .bottom .right {
  float: right;
  margin-top: 12px;
  margin-right: 14px;
  width: 86px;
  height: 30px;
  line-height: 30px;
  font-size: 16px;
  color: #fff;
  background: #74C6B3;
  text-align: center;
  border-radius: 4px;
}

footer {
  width: 100%;
  height: 264px;
  background: #333;
  margin-top: 36px;
  padding-top: 87px;
}
footer .cont {
  width: 1180px;
  height: 100%;
  margin: 0 auto;
}
footer .cont .main {
  width: 1153px;
  height: 90px;
  color: #ccc;
  font-size: 14px;
  line-height: 18px;
  text-align: center;
  margin: 0 auto;
}
footer .cont .main p {
  margin-top: 5px;
}
div.fix {
  position: fixed;
  width: 70px;
  height: 220px;
  bottom: 10px;
  right: 0px;
}
div.fix .lesson {
  width: 70px;
  height: 70px;
}
div.fix .test {
  margin: 5px auto;
}
div.fix img {
  width: 70px;
  height: 70px;
}