.course_wrap {
  padding-bottom: 5vh;
}

.course_list {
  position: relative;
  width: 100%;
  padding-left: 20px;
  margin-bottom: 50px;
}

.course_list.course_1 .pic,
.course_list.course_1 .overlay_title {
  background: #0069a6;
}

.course_list.course_1 .list a:hover {
  color: #0069a6;
}

.course_list.course_1 .list .btn_wrap a:hover {
  background: #0069a6;
  color: #fff;
  border-color: #0069a6;
}

.course_list.course_1 .list .btn_wrap a:hover .icon {
  background-image: url("../images/icon_arrow_w.png");
}

.course_list.course_1 .head:before {
  border-color: transparent #001d3f transparent transparent;
  margin-top: -8px;
}

.course_list.course_1 .head:after {
  border-color: #012561 transparent transparent transparent;
}

.course_list.course_1 .head h3 {
  background: #012561;
}

.course_list.course_2 .pic,
.course_list.course_2 .overlay_title {
  background: #605dbd;
}

.course_list.course_2 .list a:hover {
  color: #605dbd;
}

.course_list.course_2 .list .btn_wrap a:hover {
  background: #605dbd;
  color: #fff;
  border-color: #605dbd;
}

.course_list.course_2 .list .btn_wrap a:hover .icon {
  background-image: url("../images/icon_arrow_w.png");
}

.course_list.course_2 .head:before {
  border-color: transparent #0a0042 transparent transparent;
  margin-top: -8px;
}

.course_list.course_2 .head:after {
  border-color: #201465 transparent transparent transparent;
}

.course_list.course_2 .head h3 {
  background: #201465;
}

.course_list.course_3 .pic,
.course_list.course_3 .overlay_title {
  background: #008ba0;
}

.course_list.course_3 .list a:hover {
  color: #008ba0;
}

.course_list.course_3 .list .btn_wrap a:hover {
  background: #008ba0;
  color: #fff;
  border-color: #008ba0;
}

.course_list.course_3 .list .btn_wrap a:hover .icon {
  background-image: url("../images/icon_arrow_w.png");
}

.course_list.course_3 .head:before {
  border-color: transparent #001d2a transparent transparent;
  margin-top: -8px;
}

.course_list.course_3 .head:after {
  border-color: #003147 transparent transparent transparent;
}

.course_list.course_3 .head h3 {
  background: #003147;
}

.course_list.course_4 .pic,
.course_list.course_4 .overlay_title {
  background: #007e74;
}

.course_list.course_4 .list a:hover {
  color: #007e74;
}

.course_list.course_4 .list .btn_wrap a:hover {
  background: #007e74;
  color: #fff;
  border-color: #007e74;
}

.course_list.course_4 .list .btn_wrap a:hover .icon {
  background-image: url("../images/icon_arrow_w.png");
}

.course_list.course_4 .head:before {
  border-color: transparent #002120 transparent transparent;
  margin-top: -8px;
}

.course_list.course_4 .head:after {
  border-color: #00302f transparent transparent transparent;
}

.course_list.course_4 .head h3 {
  background: #00302f;
}

.course_list .head {
  position: absolute;
  left: 0;
  top: -10px;
  z-index: 1;
  color: #fff;
}

.course_list .head:before,
.course_list .head:after {
  content: "";
  display: block;
  position: absolute;
  width: 0;
  height: 0;
  border-style: solid;
}

.course_list .head:before {
  left: 0;
  top: 100%;
  border-width: 0 20px 20px 0;
}

.course_list .head::after {
  left: 100%;
  top: 0;
  border-width: 50px 20px 0 0;
}

.course_list .head h3 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  padding: 0 15px;
  font-weight: 500;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
}

.course_list .box {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  position: relative;
  z-index: 0;
  border-radius: 10px;
  overflow: hidden;
}

.course_list .box .pic {
  width: 30%;
}

.course_list .box .pic .contain_bg {
  width: 100%;
  padding-bottom: 89.5%;
  background-position: center bottom;
}

.course_list .box .list {
  position: relative;
  width: 70%;
  padding: 15px 25px;
  background: rgba(255, 255, 255, 0.8);
}

.course_list .box .list .h_wrap {
  position: relative;
  /*overflow: hidden;*/
  width: 100%;
  transition: 1s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.course_list .box .list .h_wrap .item_wrap {
  position: absolute;
  left: 0;
  top: 10px;
  width: 100%;
}

.course_list .box .list .item {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 10px;
  border-bottom: 1px solid #999;
}

.course_list .box .list .item span {
  display: inline-block;
  width: 135px;
  margin-right: 20px;
  padding: 0 10px;
  background: #96abb4;
  color: #fff;
  text-align: center;
}

.course_list .box .list .item p {
  /*width: calc(100% - 155px);*/
  line-height: 1.5em;
  padding-top: 2px;
  font-size: 1.2rem;
}

.course_list .box .list .item p a {
  cursor: pointer;
}

.course_list .box .list .btn_wrap {
  display: flex;
  justify-content: center;
  width: 100%;
  padding-top: 20px;
  padding-bottom: 10px;
}

.course_list .box .list .btn_wrap a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border-radius: 30px;
  border: 1px solid #ccc;
  background: #fff;
  font-size: 1em;
  padding: 0 15px;
  cursor: pointer;
}

.course_list .box .list .btn_wrap a.active .icon {
  transform: rotate(180deg);
}

.course_list .box .list .btn_wrap a span {
  margin-right: 5px;
}

.course_list .box .list .btn_wrap a .icon {
  width: 13px;
  height: 8px;
  background: url("../images/icon_arrow.png") no-repeat center center;
  background-size: contain;
}

.course_overlay {
  position: relative;
  width: 90%;
  max-width: 800px;
}

.course_overlay .overlay_pic {
  position: absolute;
  right: 80px;
  top: 0;
  transform: translateY(-20%);
  z-index: 1;
  width: 25%;
}

.course_overlay .overlay_pic img {
  width: 100%;
}

.course_overlay .head h3 {
  font-size: 1.625em;
}

.course_overlay .box {
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 0;
  background: #fff;
  border-radius: 15px;
}

.course_overlay .overlay_title {
  position: relative;
  width: 100%;
  padding: 40px;
  padding-top: 60px;
  color: #fff;
}

.course_overlay .overlay_title h4 {
  max-width: 70%;
  font-weight: 500;
  font-size: 1.375em;
  text-align: left;
}

.course_overlay .info {
  padding: 30px 60px;
  background: #fff;
}

.course_overlay .info .item {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  line-height: 1.5em;
  margin-bottom: 15px;
}

.course_overlay .info .item:last-child {
  margin-bottom: 0;
}

.course_overlay .info .item span {
  width: 100px;
}

.course_overlay .info .item>div {
  width: calc(100% - 120px);
}

.course_overlay .info .btn_wrap {
  display: flex;
  justify-content: center;
  padding-top: 25px;
}

.course_overlay .info .btn_wrap a {
  display: inline-block;
  padding: 3px 25px 4px 25px;
  border-radius: 30px;
  background: #ff8740;
  color: #fff;
}

.course_overlay .info .btn_wrap a:hover {
  background: #0069a6;
}

.main-info {
  padding: 1.875em 1.875em 0 1.875em;
  background-color: #fff;
  border: 0.0625em solid #eaeaea;
}

@media screen and (max-width: 30em) {
  .course_list .box .pic{
      display: none;
  }
  .course_list .box .list{
      width: 100%;
  }

  .course_list .box .list .item span{
      display: none;
  }

  .course_list .box .list .item p{
      width: 100%;
  }
  .course_list .box .list .item:first-child{
      padding-top: 4em;
  }
}

@media screen and (max-width: 48em) {
.course_list .box .pic .contain_bg{
  display: none;
}
.course_list .box .list .item{
  padding: 10px 0 0 0;
}
.course_list .box .list .item:nth-child(1){
  padding: 30px 0 0 0;
}
}