@media screen and (max-width: 768px) {
  .course--main .dialog-box {
    display: none;
  }
  .course--main .p--br {
    display: none;
  }
  .course--main .m--br {
    display: block;
  }
  .course--main .main--box {
    padding: 1.6rem 0;
  }
  .course--main .center--box {
    margin: 0 0.8rem;
  }
  .course--main .center--item {
    display: block;
    padding: 0;
  }
  .course--main .center--item .center-line {
    width: 100%;
    padding: 0.8rem 0;
  }
  .course--main .center--item .center-line img {
    width: 1.52rem;
    height: 1.3rem;
    margin-right: 1.08rem;
  }
  .course--main .center--box_30 > p {
    font-size: 0.6rem;
    line-height: 1rem;
  }
  .course--main .center--box_30 .h2--title {
    font-size: 0.6rem;
    margin-top: 1.76rem;
    line-height: 1rem;
  }
  .course--main .item--box {
    padding: 1.6rem 0;
  }
  .course--main .h1--title {
    font-size: 0.96rem;
    padding-bottom: 1.2rem;
  }
  .course--main .p-con-30 {
    font-size: 0.6rem;
    line-height: 0.8rem;
  }
  .course--main .p-con-24 {
    font-size: 0.48rem;
    line-height: 0.7rem;
  }
  .course--main .p-info-20 {
    font-size: 0.48rem;
    line-height: 0.7rem;
    margin-top: 0.2rem;
  }
  .course--main .span-red-30 {
    font-size: 0.6rem;
    line-height: 0.8rem;
  }
  .course--main .nav .nav-box {
    height: 1.88rem;
  }
  .course--main .nav .logo {
    height: 1.88rem;
  }
  .course--main .nav .logo .logo-box {
    width: 3.6rem;
    height: 1.88rem;
    line-height: 94 50rem;
  }
  .course--main .nav .logo .logo-box img {
    width: 100%;
    vertical-align: top;
    margin-top: 0.2rem;
  }
  .course--main .nav .nav-btn {
    display: none;
  }
  .course--main .nav .nav-list {
    height: 1.88rem;
  }
  .course--main .nav .nav-list li {
    height: 1.88rem;
    line-height: 1.88rem;
    padding: 0 0.5rem;
  }
  .course--main .nav .nav-list li a {
    padding-bottom: 0.1rem;
    font-size: 0.48rem;
    font-weight: bold;
  }
  .course--main .nav .nav-list li a.p-active::after {
    height: 0.04rem;
    top: 0.64rem;
  }
  .course--main .buss {
    padding: 0;
    height: 11.94rem;
    margin-top: 1.88rem;
    background: url('../../img/m-course-banner2.jpg') no-repeat center center;
    background-size: cover;
    position: relative;
  }
  .course--main .buss .p-con-30 {
    color: #FDDB1E;
    padding-top: 6.1rem;
    font-size: 0.72rem;
    line-height: 0.8rem;
    text-align: center;
  }
  .course--main .buss .apply-btn {
    color: #fff;
    background: #0066CC;
    display: inline-block;
    border-radius: 0.1rem;
    font-size: 0.6rem;
    padding: 0.3rem 0.56rem;
  }
  .course--main .viedo {
    text-align: center;
    margin-top: 1.6rem;
  }
  .course--main .main--info .p-dotted {
    padding-bottom: 1.8rem;
    padding-left: 2.6rem;
  }
  .course--main .main--info .p-con-36 {
    line-height: 0.9rem;
    padding-top: 0.7rem;
    font-size: 0.72rem;
    padding-bottom: 0;
  }
  .course--main .stage.main--box {
    padding: 0;
    height: 8.26rem;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .course--main .stage.main--box .h1--title {
    font-size: 0.6rem;
    line-height: 1rem;
    padding-bottom: 0;
  }
  .course--main .allStage .h1--title {
    line-height: 1.1rem;
    padding-bottom: 0.5rem;
  }
  .course--main .allStage .stage-main--title {
    font-weight: bold;
    padding-top: 0;
  }
  .course--main .allStage .one-title.p-con-30 {
    padding-bottom: 1.8rem;
    color: #777;
  }
  .course--main .allStage .stage-main {
    padding-left: 1.6rem;
    padding-top: 1rem;
  }
  .course--main .allStage .stage-main::before {
    width: 0.1rem;
    height: 87%;
    top: 1.56rem;
    left: 0.28rem;
  }
  .course--main .allStage .stage-time-item {
    padding-bottom: 0.8rem;
  }
  .course--main .allStage .stage-time-item::before {
    width: 0.64rem;
    height: 0.64rem;
    top: 0.06rem;
    left: -1.6rem;
  }
  .course--main .allStage .stage-time-item::after {
    width: 0.32rem;
    height: 0.32rem;
    top: 0.22rem;
    left: -1.44rem;
  }
  .course--main .allStage-two .stage-main:before {
    height: 50%;
  }
  .course--main .allStage-two .stage-time-item:before {
    background: #FFD9DB;
  }
  .course--main .allStage-two .stage-time-item:after {
    background: #FF5B60;
  }
  .course--main .founder.teacherInfo.main--box {
    padding-bottom: 0;
  }
  .course--main .founder.teacherInfo .h1--title {
    padding-bottom: 0;
    margin-bottom: -0.4rem;
  }
  .course--main .founder.teacherInfo .h2--title {
    line-height: 0;
    font-size: 0.56rem;
    padding-bottom: 0.44rem;
  }
  .course--main .founder.teacherInfo .item-lf {
    width: 3.2rem;
    height: 3.2rem;
  }
  .course--main .founder.teacherInfo .item-lr {
    padding-left: 0.88rem;
    padding-bottom: 0;
  }
  .course--main .founder.teacherInfo .item-lr .h2--title {
    line-height: 3rem;
    font-size: 0.72rem;
  }
  .course--main .founder.teacherInfo .p-con-24 {
    font-size: 0.4rem;
  }
  .course--main .founder.teacherInfo .center-title-item.center--box {
    display: block;
    margin: 0.8rem;
    padding: 0;
  }
  .course--main .founder.teacherInfo .center-title-item.center--box .p-title-30 {
    padding: 0;
    font-size: 0.6rem;
    line-height: 0.6rem;
  }
  .course--main .founder.teacherInfo .people-prev.p-con-30 {
    font-weight: bold;
    margin-top: 1.6rem;
  }
  .course--main .founder.teacherInfo .no-border {
    padding-bottom: 0.72rem;
  }
  .course--main .founder.teacherInfo .no-border .center--box {
    margin: 0 0.64rem;
  }
  .course--main .founder.teacherInfo .no-border .h1--title {
    margin-bottom: 0;
    padding-bottom: 1.2rem;
  }
  .course--main .founder.teacherInfo .no-border .h2--title {
    line-height: 0.72rem;
    font-size: 0.72rem;
    padding-bottom: 0.44rem;
  }
  .course--main .founder.teacherInfo .no-border:last-child {
    padding-bottom: 1.6rem;
  }
  .course--main .studentFee .h1--title {
    padding-bottom: 0.6rem;
  }
  .course--main .studentFee .p-con-30 {
    line-height: 1rem;
  }
  .course--main .studentFee .center--item {
    padding: 1.6rem 0;
  }
  .course--main .studentFee .center--item .jump-title {
    font-size: 0.96rem;
    padding-bottom: 0.06rem;
    border-bottom: 0.04rem solid #0066cc;
  }
  .course--main .studentFee .p-qustion {
    font-size: 0.6rem;
  }
  .course--main .studentFee .p-qustion.p-con-30 {
    line-height: 0.8rem;
    font-size: 0.6rem;
  }
  .course--main .studentFee .remid {
    padding-top: 2rem;
  }
  .course--main .studentFee .p-other-size {
    font-size: 0.48rem;
  }
  .course--main .studentFee #container,
  .course--main .studentFee #container2 {
    height: 12rem;
    font-size: 0.28rem;
  }
  .course--main .dy .p-dy {
    display: none;
  }
  .course--main .dy .m-dy {
    display: inline-block;
  }
  .course--main .footer-box {
    margin-bottom: 1.8rem;
  }
  .course--main .footer-box .center--box {
    padding: 2.4rem 0;
    margin: 0 1.68rem;
    display: block;
  }
  .course--main .footer-bottom {
    height: 1.98rem;
    font-size: 0.28rem;
    line-height: 1.98rem;
    background-color: #545454;
  }
  .course--main .footer-btn--box {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1.8rem;
    line-height: 1.8rem;
    font-size: 0;
    z-index: 999;
    display: block;
  }
  .course--main .footer-btn--box a {
    display: inline-block;
    text-align: center;
    font-size: 0.64rem;
    color: #fff;
  }
  .course--main .footer-btn--box .btn-apply {
    width: 40%;
    background-color: #036EB8;
  }
  .course--main .footer-btn--box .btn-sign-up {
    width: 60%;
    background-color: #dd392d;
  }
  .course--main .course-footer-dialog {
    display: none;
  }
  .course--main .course-footer-dialog .dialog-bg {
    width: 100%;
    height: 100%;
    background: #000000;
    opacity: 0.8;
    position: fixed;
    top: 0px;
    left: 0px;
    z-index: 1000;
  }
  .course--main .course-footer-dialog .dialog-body {
    width: 100%;
    height: 12.56rem;
    background: #036EB8;
    position: fixed;
    bottom: 0;
    left: 0;
    z-index: 9999;
  }
  .course--main .course-footer-dialog .dialog-body .dialog-body-top {
    text-align: right;
    padding: 0.6rem;
    color: #fff;
  }
  .course--main .course-footer-dialog .dialog-body-main {
    margin: 0 1.68rem;
    padding: 0.4rem 0;
  }
  .course--main .course-footer-dialog h1 {
    line-height: 1.1rem;
    color: #fff;
    padding-bottom: 0.48rem;
  }
  .course--main .course-footer-dialog .course-footer-itemlr {
    padding-top: 0.48rem;
  }
  .course--main .course-footer-dialog .course-footer-itemlr .wechat-box {
    display: inline-block;
  }
  .course--main .course-footer-dialog .course-footer-itemlr .wechat-box-one {
    margin-right: 0.5rem;
  }
  .course--main .course-footer-dialog .course-footer-itemlr a {
    display: inline-block;
    width: 2.4rem;
    height: 2.4rem;
  }
  .course--main .course-footer-dialog .course-footer-itemlr img {
    width: 100%;
    border: 0.02rem solid #eee;
    vertical-align: baseline;
  }
  .course--main .course-footer-dialog .course-footer-itemlr span {
    display: block;
    font-size: 0.48rem;
    color: #fff;
    height: 1.2rem;
    line-height: 1.2rem;
    text-align: left;
    position: relative;
    top: -1.1rem;
    left: 3rem;
  }
  .course--main .wechat-info .h1--title {
    line-height: 1.1rem;
  }
  .course--main .wechat-code {
    text-align: left;
    margin-left: 0;
  }
  .course--main .wechat-code .wechat-img {
    width: 16rem;
    height: 2.18rem;
    margin: 0;
    margin-right: 0.9rem;
  }
  .course--main .wechat-code .wechat-img img {
    width: 2.16rem;
    height: 2.18rem;
  }
  .course--main .wechat-code .wechat-img .p-con-24 {
    line-height: 0.9rem;
    position: relative;
    bottom: -1.4rem;
    left: 0.3rem;
  }
}
@media screen and (max-width: 320px) {
  .nav-logo {
    width: 4rem;
  }
  .nav-logo img {
    width: 100%;
    vertical-align: middle;
  }
  .nav-list li {
    padding: 0 0.4rem;
    display: inline-block;
  }
}
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .nav-list li {
    padding: 0 0.8rem;
    display: inline-block;
  }
}
@media screen and (min-width: 1024px) and (max-width: 1366px) {
  .nav-list li {
    padding: 0 1.2rem;
    display: inline-block;
  }
}