.courseList .Txt .title a::before, .tagBox ul a::before, .tagBox ul a::after, .classBox.filter .classLink .filterList > li a::after, .classBox.filter .classLink .filterList > li a::before, .classBox.topClassBox .classLink a::after, .classBox.topClassBox .classLink a::before, .mainArea.list .rightBox {
  transition: all 0.5s;
}

.mainArea {
  padding: 94px 0 147px;
}
@media (max-width: 1200px) {
  .mainArea {
    padding: 101px 0 60px;
  }
}
.mainArea.list .contentBox {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  overflow: hidden;
}
.mainArea.list .leftBox {
  width: 22%;
}
@media (max-width: 1200px) {
  .mainArea.list .leftBox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    -webkit-transform: translateY(-20px);
            transform: translateY(-20px);
    overflow-y: auto;
    background-color: #fff;
    padding-top: 130px;
    padding-bottom: calc(150px + env(safe-area-inset-bottom));
    padding-left: 40px;
    padding-right: 40px;
    pointer-events: none;
    opacity: 0;
    transition: all 0.5s;
    z-index: 11;
  }
  .mainArea.list .leftBox.open {
    -webkit-transform: translateY(0);
            transform: translateY(0);
    pointer-events: auto;
    opacity: 1;
  }
}
.mainArea.list .rightBox {
  width: 78%;
  padding-left: 50px;
}
.mainArea.list .rightBox.ajaxDisabled {
  opacity: 0.15;
  pointer-events: none;
}
@media (max-width: 1200px) {
  .mainArea.list .rightBox {
    width: 100%;
    padding-left: 0;
  }
}

.titleBox .titleTw {
  padding-top: 52px;
}
.titleBox .titleTw::after {
  background: url(../images/icon/bulb.png) no-repeat;
  width: 49px;
  height: 50px;
}

.filterBoxBtn {
  position: fixed;
  top: 54px;
  left: 0;
  width: 100%;
  z-index: 10;
}
.filterBoxBtn a {
  display: block;
  color: #fff;
  background-color: #000;
  text-align: center;
  padding: 10px;
}
@media (min-width: 1201px) {
  .filterBoxBtn {
    display: none;
  }
}

.closeBtn {
  position: absolute;
  top: 54px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 0 0 0 30px;
  background-color: #000;
}
.closeBtn a {
  position: relative;
  display: block;
  height: 100%;
}
.closeBtn a::before, .closeBtn a::after {
  content: "";
  position: absolute;
  top: calc(50% - 0.5px);
  left: calc(50% - 7.5px);
  width: 15px;
  height: 1px;
  background-color: #fff;
}
.closeBtn a::before {
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
}
.closeBtn a::after {
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
}

.filterFuncList {
  margin-top: 20px;
}
.filterFuncList li {
  position: relative;
}
.filterFuncList li a {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: center;
      justify-content: center;
  border: 2px solid #000;
  border-radius: 50px;
  letter-spacing: 0.5px;
  line-height: 1;
  padding: 17px;
  margin: 5px 0;
  text-align: center;
}
.filterFuncList li a i {
  margin-right: 20px;
}
.filterFuncList li a .icon {
  position: relative;
  width: 14px;
  height: 14px;
  margin-right: 20px;
}
.filterFuncList li a .icon::before, .filterFuncList li a .icon::after {
  content: "";
  position: absolute;
  top: calc(50% - 0.5px);
  left: 0;
  width: 100%;
  height: 2px;
  background-color: #000;
}
.filterFuncList li a .icon::before {
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
}
.filterFuncList li a .icon::after {
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
}
@media (min-width: 1201px) {
  .filterFuncList li a:hover {
    background-color: #ffec00;
  }
}
@media (max-width: 1200px) {
  .filterFuncList {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    margin: 20px -5px 0;
  }
  .filterFuncList li {
    width: 50%;
    padding: 0 5px;
  }
}
@media (max-width: 640px) {
  .filterFuncList {
    display: block;
  }
  .filterFuncList li {
    width: 100%;
  }
}

.classBox.topClassBox {
  position: relative;
  background-color: #fff;
  border: 2px solid #000;
  overflow: hidden;
  border-radius: 10px;
  padding: 10px 0;
}
.classBox.topClassBox::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: #000;
}
@media (max-width: 1200px) {
  .classBox.topClassBox .classLink {
    position: relative;
    display: block;
  }
}
.classBox.topClassBox .classLink > li {
  border: 0;
}
.classBox.topClassBox .classLink a {
  color: #000;
  padding: 10px 24px 10px 82px;
}
.classBox.topClassBox .classLink a::before, .classBox.topClassBox .classLink a::after {
  content: "";
  border-radius: 3px;
  display: block;
  position: absolute;
  top: 50%;
  z-index: 1;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
}
.classBox.topClassBox .classLink a::before {
  left: 24px;
  width: 19px;
  height: 19px;
  border: 1px solid #000;
  background-color: #fff;
}
.classBox.topClassBox .classLink a::after {
  left: 27px;
  width: 15px;
  height: 13px;
  background: url(../images/icon/hook.svg) no-repeat center;
  opacity: 0;
}
.classBox.topClassBox .classLink a.current {
  color: #000;
  background-color: #fff;
}
.classBox.topClassBox .classLink a.current::before {
  background-color: #ffec00;
}
.classBox.topClassBox .classLink a.current::after {
  opacity: 1;
}
@media (min-width: 1201px) {
  .classBox.topClassBox .classLink a:hover {
    background-color: #fff;
  }
  .classBox.topClassBox .classLink a:hover::before {
    background-color: #ffec00;
  }
  .classBox.topClassBox .classLink a:hover::after {
    opacity: 1;
  }
}
@media (max-width: 1200px) {
  .classBox.topClassBox .classLink a {
    font-size: 16px;
  }
}
.classBox.filter {
  background-color: #fff;
  border: 2px solid #000;
  overflow: hidden;
  border-radius: 10px;
  padding-top: 25px;
  z-index: 3;
}
@media (max-width: 1200px) {
  .classBox.filter .classLink {
    position: relative;
    display: block;
  }
}
.classBox.filter .classLink > li {
  position: relative;
  border: 0;
}
.classBox.filter .classLink > li:not(:first-child) {
  padding-top: 23px;
}
.classBox.filter .classLink > li:not(:first-child)::before, .classBox.filter .classLink > li:not(:first-child)::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: #000;
}
.classBox.filter .classLink > li:not(:first-child)::before {
  top: 0;
}
.classBox.filter .classLink > li:not(:first-child)::after {
  top: 2px;
}
@media (max-width: 1200px) {
  .classBox.filter .classLink > li a {
    font-size: 16px;
  }
}
.classBox.filter .classLink .topTitle {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  border-bottom: 1px solid #000;
  padding: 0 15px 23px 25px;
}
.classBox.filter .classLink .topTitle::before {
  content: "";
  position: absolute;
  bottom: 1px;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: #000;
}
.classBox.filter .classLink .topTitle .icon {
  width: 28px;
  height: 29px;
  background: url(../images/icon/pen.png) no-repeat;
}
.classBox.filter .classLink .topTitle .title {
  color: #000;
  font-size: 22px;
  font-weight: 500;
  padding-left: 25px;
}
.classBox.filter .classLink .filterList {
  display: block;
  padding: 10px 0;
}
.classBox.filter .classLink .filterList > li {
  border: 0;
}
.classBox.filter .classLink .filterList > li a {
  color: #000;
  padding: 10px 24px 10px 82px;
}
.classBox.filter .classLink .filterList > li a::before, .classBox.filter .classLink .filterList > li a::after {
  content: "";
  border-radius: 3px;
  display: block;
  position: absolute;
  top: 50%;
  z-index: 1;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
}
.classBox.filter .classLink .filterList > li a::before {
  left: 24px;
  width: 19px;
  height: 19px;
  border: 1px solid #000;
  background-color: #fff;
}
.classBox.filter .classLink .filterList > li a::after {
  left: 27px;
  width: 15px;
  height: 13px;
  background: url(../images/icon/hook.svg) no-repeat center;
  opacity: 0;
}
.classBox.filter .classLink .filterList > li a.selected {
  color: #000;
}
.classBox.filter .classLink .filterList > li a.selected::before {
  background-color: #ffec00;
}
.classBox.filter .classLink .filterList > li a.selected::after {
  opacity: 1;
}
.classBox.filter .classLink .filterList > li a.forbidden {
  background-color: rgba(248, 248, 248, 0.5);
  color: rgba(47, 47, 47, 0.3);
  pointer-events: none;
}
.classBox.filter .classLink .filterList > li a.forbidden::before, .classBox.filter .classLink .filterList > li a.forbidden::after {
  border-color: rgba(98, 98, 98, 0.1);
}
@media (min-width: 1201px) {
  .classBox.filter .classLink .filterList > li a:hover {
    background-color: #fff;
  }
  .classBox.filter .classLink .filterList > li a:hover::before {
    background-color: #ffec00;
  }
  .classBox.filter .classLink .filterList > li a:hover::after {
    opacity: 1;
  }
}
.classBox .classList {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}
@media (min-width: 641px) {
  .classBox .classList {
    margin: 0 -20px;
  }
}
.classBox .classList .classItem {
  width: 50%;
  padding: 0 20px 80px;
}
@media (max-width: 1200px) {
  .classBox .classList .classItem {
    padding: 0 20px 40px;
  }
}
@media (max-width: 640px) {
  .classBox .classList .classItem {
    width: 100%;
    padding: 0 0 40px;
  }
}
.classBox .classList .item {
  position: relative;
}
.classBox .classList .Img {
  border-radius: 15px;
  overflow: hidden;
}
.classBox .classList .Img img {
  width: 100%;
  display: block;
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
}
.classBox .classList .Txt {
  position: absolute;
  bottom: 37px;
  left: 0;
  width: 100%;
  padding: 0 20px;
  z-index: 1;
}
.classBox .classList .Txt .title a {
  position: relative;
  max-width: 341px;
  z-index: 1;
}
@media (max-width: 640px) {
  .classBox .classList .Txt {
    bottom: 20px;
  }
}

.tagBox {
  background-color: #fff;
  border: 2px solid #000;
  overflow: hidden;
  border-radius: 10px;
  padding-bottom: 25px;
}
.tagBox .topTitle {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  background-color: #f1f1f1;
  border-bottom: 1px solid #000;
  padding: 25px 23px 23px;
}
.tagBox .topTitle::before {
  content: "";
  position: absolute;
  bottom: 1px;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: #000;
}
.tagBox .topTitle .icon {
  width: 20px;
  height: 25px;
  background: url(../images/icon/suject.svg) no-repeat;
}
.tagBox .topTitle .title {
  color: #000;
  font-size: 22px;
  font-weight: 500;
  padding-left: 17px;
}
.tagBox ul {
  display: block;
  padding: 15px 21px;
}
.tagBox ul li {
  display: block;
  padding: 5px 0;
  margin: 0;
}
.tagBox ul a {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  color: #000;
  border-radius: 50px;
  font-size: 16px;
  border: 0;
  padding: 3px 40px;
  margin: 0;
}
.tagBox ul a::before, .tagBox ul a::after {
  content: "";
  position: absolute;
  top: calc(50% - 0.5px);
  right: 18px;
  width: 15px;
  height: 2px;
  background-color: #545454;
  opacity: 0;
}
.tagBox ul a span {
  margin-right: 20px;
}
.tagBox ul a.current {
  color: #000;
  background-color: rgba(255, 236, 0, 0.5);
}
.tagBox ul a.current::before {
  content: "";
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
  margin-right: 0;
  opacity: 1;
}
.tagBox ul a.current::after {
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
  opacity: 1;
}
@media (min-width: 1201px) {
  .tagBox ul a:hover {
    color: #000;
    background-color: rgba(255, 236, 0, 0.5);
  }
  .tagBox ul a:hover::before {
    content: "";
    -webkit-transform: rotate(45deg);
            transform: rotate(45deg);
    margin-right: 0;
    opacity: 1;
  }
  .tagBox ul a:hover::after {
    -webkit-transform: rotate(-45deg);
            transform: rotate(-45deg);
    opacity: 1;
  }
}

.classNote {
  padding-bottom: 10px;
  line-height: 1.8;
  font-size: 15px;
  color: #222;
  text-align: center;
}
.classNote img {
  max-width: 100%;
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
}

.courseList .courseItem {
  padding: 30px 0;
}
.courseList .courseItem:not(:last-child) {
  border-bottom: 1px solid rgba(0, 0, 0, 0.3);
}
@media (max-width: 1200px) {
  .courseList .courseItem:nth-child(2) {
    padding-top: 10px;
  }
}
.courseList .courseItem.title {
  padding-top: 0;
  border-bottom-width: 3px;
  border-color: #000;
}
@media (max-width: 1200px) {
  .courseList .courseItem.title {
    display: none;
  }
}
.courseList .item {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -ms-flex-align: center;
      align-items: center;
  padding: 0 10px;
}
@media (max-width: 1200px) {
  .courseList .item {
    padding: 0;
  }
}
.courseList .left {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: center;
      justify-content: center;
  width: 160px;
}
@media (max-width: 1200px) {
  .courseList .left {
    display: none;
  }
}
.courseList .right {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -ms-flex-align: center;
      align-items: center;
  width: calc(100% - 160px);
}
@media (max-width: 1200px) {
  .courseList .right {
    width: 100%;
  }
}
.courseList .grade {
  font-size: 19px;
  font-weight: 400;
  text-align: center;
}
.courseList .name {
  position: relative;
  width: 100%;
  font-size: 19px;
  font-weight: 400;
  text-align: center;
}
.courseList .name::before {
  content: "";
  position: absolute;
  top: calc(50% - 7.5px);
  left: 0;
  width: 1px;
  height: 15px;
  background-color: rgba(0, 0, 0, 0.3);
}
.courseList .classTitle {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: center;
      justify-content: center;
  width: 130px;
  min-height: 50px;
  color: #000;
  background-color: #ffec00;
  border-radius: 15px;
  padding: 10px 20px;
}
.courseList .Img {
  width: 190px;
  border-radius: 15px;
  overflow: hidden;
  margin-left: 20px;
}
.courseList .Img img {
  width: 100%;
  display: block;
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
}
@media (max-width: 1200px) {
  .courseList .Img {
    margin-left: 0;
  }
}
@media (max-width: 640px) {
  .courseList .Img {
    width: 100%;
  }
}
.courseList .Txt {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -ms-flex-align: center;
      align-items: center;
  width: calc(100% - 210px);
  padding-left: 20px;
}
@media (max-width: 1200px) {
  .courseList .Txt {
    width: calc(100% - 190px);
  }
}
@media (max-width: 640px) {
  .courseList .Txt {
    width: 100%;
    padding-top: 20px;
    padding-left: 0;
  }
}
.courseList .Txt .classTitle {
  width: 100px;
  min-height: 24px;
  padding: 8px 20px;
}
@media (min-width: 1201px) {
  .courseList .Txt .classTitle {
    display: none;
  }
}
.courseList .Txt .time {
  width: 100%;
  margin-bottom: 5px;
}
@media (max-width: 1200px) {
  .courseList .Txt .time {
    width: calc(100% - 100px);
    padding-left: 20px;
    margin-bottom: 0;
  }
}
@media (max-width: 640px) {
  .courseList .Txt .time {
    width: 100%;
    padding-left: 0;
    margin-top: 10px;
  }
}
.courseList .Txt .title {
  width: calc(100% - 92px);
  padding-right: 30px;
}
.courseList .Txt .title a {
  position: relative;
  font-size: 20px;
  font-weight: 400;
  z-index: 1;
}
.courseList .Txt .title a::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 7px;
  background-color: #ffec00;
  z-index: -1;
}
@media (min-width: 1201px) {
  .courseList .Txt .title a:hover::before {
    width: 100%;
  }
}
@media (max-width: 1200px) {
  .courseList .Txt .title {
    width: 100%;
    padding-right: 0;
    margin-top: 10px;
  }
}
.courseList .Txt .btn1 {
  width: 92px;
}
@media (max-width: 1200px) {
  .courseList .Txt .btn1 {
    margin-left: auto;
    margin-top: 20px;
  }
}
@media (max-width: 640px) {
  .courseList .Txt .btn1 {
    margin-left: initial;
  }
}

.mainArea.ins > .wrap {
  max-width: 1496px;
}
@media (min-width: 1701px) {
  .mainArea.ins > .wrap {
    position: relative;
    left: 18px;
  }
}
@media (min-width: 1201px) {
  .mainArea.ins > .wrap {
    padding: 0 66px 0 30px;
  }
}
.mainArea.ins .topBox {
  position: relative;
  background: url(../images/course/notebook_bg.png) center;
  border: 2px solid #000;
  border-radius: 10px;
  padding: 110px 98px 126px;
  margin-top: 30px;
}
@media (max-width: 1200px) {
  .mainArea.ins .topBox {
    padding: 90px 50px 106px;
  }
}
@media (max-width: 768px) {
  .mainArea.ins .topBox {
    padding: 90px 20px 106px;
    margin-top: 80px;
  }
}
.mainArea.ins .tab {
  position: absolute;
  top: 4.4%;
  left: 100%;
  display: block;
  border-top: 0;
}
.mainArea.ins .tab li {
  margin: 8px 0;
}
.mainArea.ins .tab a {
  min-height: 152px;
  color: #000;
  background-color: #97caff;
  -webkit-writing-mode: vertical-rl;
      -ms-writing-mode: tb-rl;
          writing-mode: vertical-rl;
  font-size: 20px;
  letter-spacing: 2px;
  border: 2px solid #000;
  border-radius: 0 10px 10px 0;
  padding: 20px 17px;
}
@media (min-width: 1201px) {
  .mainArea.ins .tab a:hover {
    background-color: #ffec00;
  }
}
@media (max-width: 1200px) {
  .mainArea.ins .tab {
    display: none;
  }
}
.mainArea.ins .topIllustration {
  position: absolute;
  top: -36px;
  left: 0;
  width: 100%;
  height: 78px;
  pointer-events: none;
}
.mainArea.ins .topIllustration .illustration {
  position: absolute;
  top: 0;
  width: 81px;
  height: 100%;
}
.mainArea.ins .topIllustration .illustration::before, .mainArea.ins .topIllustration .illustration::after {
  content: "";
  position: absolute;
  top: 0;
  width: 27px;
  height: 100%;
  background: url(../images/course/notebook_top.png) no-repeat;
}
.mainArea.ins .topIllustration .illustration::before {
  left: 0;
}
.mainArea.ins .topIllustration .illustration::after {
  right: 0;
}
.mainArea.ins .topIllustration .illustrationLeft {
  left: 7%;
}
.mainArea.ins .topIllustration .illustrationRight {
  right: 7%;
}
@media (max-width: 768px) {
  .mainArea.ins .topIllustration .illustration {
    width: 64px;
  }
}
.mainArea.ins .classDateShareBox {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: justify;
      justify-content: space-between;
}
.mainArea.ins .classDateShareBox .left {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -ms-flex-align: center;
      align-items: center;
  padding-right: 30px;
}
@media (max-width: 768px) {
  .mainArea.ins .classDateShareBox .right {
    width: 100%;
    margin-top: 5px;
  }
}
.mainArea.ins .classTitle {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: center;
      justify-content: center;
  max-width: 150px;
  min-width: 87px;
  min-height: 34px;
  color: #fff;
  background-color: #000;
  border-radius: 50px;
  padding: 6px 18px;
  margin-right: 30px;
}
@media (max-width: 1200px) {
  .mainArea.ins .classTitle {
    margin: 5px 30px 5px 0;
  }
}
.mainArea.ins .date {
  display: inline-block;
  letter-spacing: 1.7px;
}
.mainArea.ins .date span {
  margin-right: 12px;
}
@media (max-width: 768px) {
  .mainArea.ins .date {
    margin: 5px 0;
  }
}
.mainArea.ins .articleTitle {
  display: -ms-inline-flexbox;
  display: inline-flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  color: #000;
  font-size: 30px;
  font-weight: 400;
  letter-spacing: 3px;
  border-bottom: 0;
  margin-top: 4px;
  margin-bottom: 32px;
  padding: 10px 0 0;
}
.mainArea.ins .articleTitle span {
  position: relative;
  z-index: 1;
}
.mainArea.ins .articleTitle span::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 10px;
  background-color: #ffec00;
  z-index: -1;
}
@media (max-width: 768px) {
  .mainArea.ins .articleTitle {
    margin-top: 10px;
  }
}
.mainArea.ins .filterList {
  border-bottom: 2px solid #000;
  padding-bottom: 57px;
  margin-bottom: 61px;
}
@media (max-width: 768px) {
  .mainArea.ins .filterList {
    padding-bottom: 37px;
    margin-bottom: 41px;
  }
}
.mainArea.ins .filterList li {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -ms-flex-align: center;
      align-items: center;
  padding: 7px 0;
}
.mainArea.ins .filterList span {
  color: #000;
  font-size: 18px;
  letter-spacing: 1px;
}
.mainArea.ins .filterList span.title {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
}
.mainArea.ins .filterList span.title::after {
  content: "";
  display: inline-block;
  border-style: solid;
  border-width: 4.5px 0 4.5px 6px;
  border-color: transparent transparent transparent #000;
  margin: 0 18px;
}
.mainArea.ins .textEditor {
  color: #505050;
  font-size: 17px;
  letter-spacing: 1px;
  line-height: 2;
}
.mainArea.ins .textEditor iframe {
  height: 670px;
  border: 2px solid #000;
  border-radius: 5px;
}
@media (max-width: 768px) {
  .mainArea.ins .textEditor iframe {
    height: 500px;
  }
}
@media (max-width: 640px) {
  .mainArea.ins .textEditor iframe {
    height: 350px;
  }
}
.mainArea.ins .tagList {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  margin: 40px -4px 0;
}
.mainArea.ins .tagList li {
  background-color: #f2f2f2;
  border-radius: 5px;
  font-size: 18px;
  padding: 6px 16px;
  margin: 4px;
}
.mainArea.ins .bottomBox {
  position: relative;
  background: url(../images/course/notebook_bg.png) center;
  border: 2px solid #000;
  border-radius: 10px;
  padding: 56px 98px 71px;
  margin-top: 10px;
}
@media (max-width: 1200px) {
  .mainArea.ins .bottomBox {
    padding: 70px 50px 50px;
  }
}
@media (max-width: 768px) {
  .mainArea.ins .bottomBox {
    padding: 70px 20px 50px;
  }
}
.mainArea.ins .bottomBox h2.title {
  position: relative;
  text-align: center;
  z-index: 1;
}
.mainArea.ins .bottomBox h2.title span {
  position: relative;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -ms-flex-align: center;
      align-items: center;
  -ms-flex-pack: center;
      justify-content: center;
  width: 58px;
  height: 58px;
  color: #fff;
  font-size: 35px;
  font-weight: 500;
  margin: 0 -11px;
}
.mainArea.ins .bottomBox h2.title span::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #000;
  z-index: -1;
}
@media (max-width: 768px) {
  .mainArea.ins .bottomBox h2.title span {
    width: 50px;
    height: 50px;
    font-size: 30px;
    margin: 0 -9px;
  }
}
.mainArea.ins .bottomIllustration {
  position: absolute;
  top: -52px;
  left: 0;
  width: 100%;
  height: 96px;
  pointer-events: none;
}
.mainArea.ins .bottomIllustration .illustration {
  position: absolute;
  top: 0;
  width: 81px;
  height: 100%;
}
.mainArea.ins .bottomIllustration .illustration::before, .mainArea.ins .bottomIllustration .illustration::after {
  content: "";
  position: absolute;
  top: 0;
  width: 27px;
  height: 100%;
  background: url(../images/course/notebook_bottom.png) no-repeat;
}
.mainArea.ins .bottomIllustration .illustration::before {
  left: 0;
}
.mainArea.ins .bottomIllustration .illustration::after {
  right: 0;
}
.mainArea.ins .bottomIllustration .illustrationLeft {
  left: 7%;
}
.mainArea.ins .bottomIllustration .illustrationRight {
  right: 7%;
}
@media (max-width: 768px) {
  .mainArea.ins .bottomIllustration .illustration {
    width: 64px;
  }
}
.mainArea.ins .downloadList {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  margin: 35px -10px 0;
}
.mainArea.ins .downloadList .downloadItem {
  width: 25%;
  padding: 10px;
}
@media (max-width: 1400px) {
  .mainArea.ins .downloadList .downloadItem {
    width: 33.3333333333%;
  }
}
@media (max-width: 768px) {
  .mainArea.ins .downloadList .downloadItem {
    width: 50%;
  }
}
@media (max-width: 640px) {
  .mainArea.ins .downloadList .downloadItem {
    width: 100%;
  }
}
.mainArea.ins .downloadList .title a {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
      align-items: center;
  width: 100%;
  min-height: 72px;
  background-color: #fff;
  border: 2px solid #000;
  border-radius: 5px;
  padding: 20px 36px 20px 24px;
}
@media (min-width: 1201px) {
  .mainArea.ins .downloadList .title a:hover {
    background-color: #ffec00;
  }
}
@media (max-width: 1200px) {
  .mainArea.ins .downloadList .title a {
    padding: 20px 24px;
  }
}
.mainArea.ins .downloadList .title .text {
  width: calc(100% - 21px);
  color: #000;
  font-size: 18px;
  letter-spacing: 2px;
  padding-right: 14px;
}
.mainArea.ins .downloadList .title .icon {
  width: 21px;
  height: 27px;
  background: url(../images/icon/download.svg) no-repeat;
}