.main-container{
  background: none;
}
.course-infos {
  background: #000;
  text-align: center;
  position: relative;
  height:6.15rem;
}
.course-infos .path{
  position: relative;
  z-index: 1;
  line-height: 0.6rem;
  font-size: .5rem;
  color: rgba(255, 255, 255, 0.5);
  opacity: 1;
  filter: alpha(opacity=100);
  text-align: left;
  padding: 0.5rem 0.5rem 0 0.5rem;
}
.course-infos .path a {
    color: rgba(255, 255, 255, 0.5);
}
.course-infos .path .path-split {
    margin: 0 0.2rem;
    font-style: normal;
}
.course-infos h2{
  padding: 1.2rem;
  font-size: .9rem;
  line-height: .9rem;
  font-weight: normal;
  color: #fff;
  text-align: center;
}
.course-infos .statics {
  color: rgba(255,255,255,.5);
  font-size: 0;
  white-space: nowrap;
}


.course-infos .progress {
    position: absolute;
    height: 6px;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.2);
}
.course-infos .progress ins {
    position: absolute;
    height: 6px;
    left: 0;
    bottom: 0;
    content: "";
    width: 0%;
    transition: 2s width;
    background-color: #00b43c;
}

.course-infos .btn-share{
  position: absolute;
  font-size: .7rem;
  line-height: 2rem;
  right: 1rem;
  bottom: 1.2rem;
  color: rgba(255,255,255,.5);
}
.btn-course-red,.btn-course-green {
  margin: 1.2rem 0;
  padding: 0 1.2rem;
  background: #ff2d50;
  color: #fff;
  display: inline-block;
  font-size: .8rem;
  line-height: 2rem;
  text-align: center;
  border-radius: .2rem;
}

.btn-course-green{
  background: #21cc86;
}
.course-content{
  padding:1.2rem;
  background:#fff;
  overflow:hidden;
  box-shadow: 0 0 0.5rem .1rem #e0e3e6
}
.course-content .course-intro{
  padding:.8rem 0;
  line-height: 1.4rem;
  font-size:.6rem;
  border-bottom: 1px solid #d9dde1;
}
.course-content ul{
  padding-top:1rem;
}
.course-content li{
  float:left;
  width:22%;
  box-sizing:border-box;
  color:#71777d;
  font-size:.5rem;
  text-align:center;
}
.course-content li{
  border-right:1px solid #d9dde1;
}
.course-content li:last-child{
  border:0;
}

.course-container{
  background:none;
  padding-bottom: 1.1rem !important;
}

.course-container-white{
  background:#fff;
}

ul.course-teacher li{
  display: block;
  padding-bottom: .4rem;
  overflow: hidden;
}
ul.course-teacher span{
  display: block;
}
ul.course-teacher a{
  
}
ul.course-teacher span i{
  color: #ef1313;
}

.course-teacher-uimg{
  float: left;
}
.course-teacher-uimg img{
  width: 2rem;
  height: 2rem;
  margin-right: .6rem;
  border-radius: 50%;
}
.course-teacher-uname{
  margin-top: .1rem;
  font-size: .7rem;
}
.course-teacher-ujob{
  font-size: .6rem;
  color: #71777d;
}
.course-info-tip{
  padding-bottom:1.5rem; 
}
.course-info-tip dl{
  padding-top: .4rem;
}
.course-info-tip dt{
  padding: .8rem 0 .8rem;
  line-height: .7rem;
  font-size: .7rem;
  color: #2b333b;
}
.course-info-tip dd{
  line-height: 1.2rem;
  font-size: .6rem;
  color: #71777d;
}


.course-side{
  background:#fff;
}

.course-side ul{
  margin-top: -0.4rem;
  padding-bottom:1rem;
  font-size: .6rem;
  line-height: 1.5rem;
}
.video-btns{
  margin-top: -5px;
  border-bottom: 1px solid #d9dde1;
}
.video-btns .btn-course-red{
  margin: .8rem 0;
  padding: 0 .6rem;
}
.btn-getapp,.btn-share{
  color: #71777d;
}
.video-btns ul{
  float: right;
  margin-top: 1.3rem;
}
.video-btns li{
  float: left;
}
.video-btns li:first-child::after{
  content: "";
  border-right: 1px solid #b7bbbf;
  margin:0 1.4rem;
}
.video-btns i{
  color: #ff2d50;
  font-size: .8rem;
  margin-right: .4rem;
  margin-top: .1rem;
  float: left;
}

.course-intro{
  position: relative;
  z-index: 2;
}

.info-bg,.info-bg .cover-mask {
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
}
.info-bg {
    overflow: hidden;
    z-index: 0;
}

.course-infos .info-bg .cover-img-wrap {
    overflow: hidden;
    z-index: 0;
}
.course-btns{
  width:100%;
  position:fixed;
  bottom:0;
}
.course-btns a{
  margin:0;
  width:100%;
  border-radius:0;
  box-sizing:border-box;
  line-height:2.5rem;
  height:2.5rem;
}

.learn-menu a{ 
	position: relative;
    flex: 1;
    font-size: 0.64rem;
    line-height: 2.2rem;
    color: #71777D;
    letter-spacing: 0;
    text-align: center;
}

.learn-menu a.cur{
  color: #FF2D50;
}

.learn-menu a.cur::before{
  display: block;
}
.learn-menu a::before{
  display: none;
  position: absolute;
  left: 50%;
  bottom: 0;
  margin-left: -0.6rem;
  content: ' ';
  background: #FF2D50;
  width: 1.2rem;
  height: 0.06rem;
}

.learn-menu{
  display: flex;
  background: #FFFFFF;
  box-shadow: 0 2px 4px 0 rgba(0,0,0,0.10);
  height: 2.2rem;
}
.should-hide {
  display: none !important;
}
.down-app-container {
  display: flex;
  justify-content: center;
  margin-top: 4.5rem;
}
.app-main-box {
  width: 8.5rem;
  height: 8.5rem;
}
.top-img {
  width: 4.85rem;
  height: 4.5rem;
  margin: 0 auto 2rem;
  background: url('/wap/img/app_down.png');
}
.bottom-btn {
  width: 8.5rem;
  height: 2rem;
  line-height: 2rem;
  background: #1E2337;
  border-radius: 1.45rem;
  color: #fff;
  font-size: 0.7rem;
  text-align: center;
}
.app-down-btn {
  cursor: pointer;
}