@media (min-width: 768px) and (max-width: 991px) {
  .title {
    font-size: 24px;
  }
  .description {
    font-size: 20px;
  }
  .content {
    font-size: 16px;
  }
  .btn.btn-custom {
    padding: 0px 24px;
    font-size: 14px;
  }
  .btn.btn-arrow-right {
    padding: 0px 60px 0px 24px;
    background-position: calc(100% - 12px) center;
  }
  .popup .inner {
    margin: 5vh auto;
    max-width: 700px;
    min-height: 90%;
    max-height: 90%;
  }
  .popup .inner .contain {
    margin: 35px 15px;
    padding: 15px 20px;
    min-height: calc(100% - 70px);
    max-height: calc(100% - 70px);
  }
  .popup .inner .title {
    font-size: 28px;
  }
  .popup .inner .description {
    font-size: 20px;
  }
  .popup .inner .content {
    font-size: 16px;
  }
  .popup[data-style=vertical] .contain {
    margin: 15px 15px;
    padding: 15px 20px;
    min-height: calc(100% - 30px);
    max-height: calc(100% - 30px);
  }
  #HomepageBanner .layer-white {
    bottom: 5vw;
  }
  #HomepageBanner .layer-white .title {
    font-size: 32px;
  }
  #HomepageBanner .layer-white .content {
    font-size: 16px;
  }
  #HomepageBanner .layer-white .btn-custom {
    line-height: 2;
    background-position: calc(100% - 18px) center;
  }
  #HomepageSection1,
  #HomepageSection3,
  #HomepageSection5,
  #HomepageSection6,
  #HomepageSection8 {
    padding: 5vh 0;
  }
  #HomepageSection3 .content,
  #HomepageSection5 .content,
  #HomepageSection6 .content,
  #HomepageSection8 .content {
    margin: 0 0 50px;
  }
  #HomepageSection2 .box-center .title,
  #HomepageSection7 .box-center .title {
    font-size: 24px;
  }
  #HomepageSection2 .box-center .content,
  #HomepageSection7 .box-center .content {
    font-size: 32px;
  }
  #HomepageSection4 .box-center .title,
  #HomepageSection9 .box-center .title,
  .contactSectionBanner .box-center .title {
    font-size: 32px;
  }
  #HomepageSection4 .box-center .content,
  #HomepageSection9 .box-center .content,
  .contactSectionBanner .box-center .content {
    font-size: 20px;
  }
  #HomepageSection6 .title {
    font-size: 32px;
  }
  #HomepageSection6 .content {
    font-size: 20px;
  }
  #AboutSection0 {
    padding-bottom: 100px;
  }
  #AboutSection0 .inner .description {
    margin: 30px 0 30px;
    font-size: 20px;
  }
  #InterviewSection0 .inner .title {
    font-size: 32px;
  }
  #InterviewSection1 .inner .letter p {
    background-image: repeating-linear-gradient(transparent,transparent 31px,#e3e1e1 32px);
  }
  .InterviewSection2 {
    margin-top: 150px;
    margin-bottom: 150px;
  }
  .InterviewSection2 .inner .title {
    padding: 40px 0;
  }
  .InterviewSection2 .inner .title h3 {
    font-size: 60px;
    line-height: 120px;
  }
  .InterviewSection2 .inner .title h3::after {
    right: calc(-750px * 10 / 12 + 100% + 100px + 30px + 2px);
  }
  .InterviewSection2 .inner .title p {
    font-size: 24px;
  }
  .InterviewSection2 .inner .qa-content .content {
    font-size: 16px;
  }
  .InterviewSection2 .inner .qa-content .content.author {
    font-size: 20px;
  }
  .InterviewSection2 .inner .qa-end {
    margin: 30px 0;
  }
  .InterviewSection2 .inner .qa-image {
    margin: 50px 0;
  }
  .sticker-ink {
    transform: translate(-50%,-50%) scale(.7);
  }
  #CourseSection0 {
    padding-bottom: 100px;
  }
  #CourseSection0 .inner .content {
    font-size: 32px;
  }
  #CourseSection1 {
    padding-top: 560px;
    padding-bottom: 60px;
    background-size: auto 560px;
  }
  #CourseSection1 .inner .title {
    font-size: 32px;
  }
  #CourseSection1 .inner .description {
    margin-bottom: 30px;
    font-size: 24px;
  }
  #CourseSection1 .grid .grid-item:nth-child(2) {
    border-top: none;
  }
  #CourseSection1 .grid .grid-item:nth-child(2n+1) {
    transition-delay: 0ms;
  }
  #CourseSection1 .grid .grid-item:nth-child(2n) {
    transition-delay: 150ms;
  }
  #CourseSection2 {
    padding-top: 560px;
    padding-bottom: 60px;
    background-size: auto 560px;
  }
  #CourseSection2 .inner .title {
    font-size: 32px;
  }
  #CourseSection2 .inner .description {
    margin-bottom: 30px;
    font-size: 24px;
  }
  #CourseSection2 .grid .grid-item .title {
    margin-top: 15px;
    font-size: 20px;
  }
  #CourseSection2 .grid .grid-item .content {
    font-size: 16px;
  }
  #CourseSection2 .grid .grid-item .btn-detail a {
    font-size: 14px;
  }
  #CourseSection5 {
    margin: 0;
    min-height: calc(100vh - 90px);
    background-size: cover;
  }
  #CourseSection5 .inner .box-center-div {
    height: calc(100vh - 90px);
  }
  #CourseSection5 .inner .title {
    font-size: 32px;
  }
  #CourseSection5 .inner .description {
    margin-bottom: 30px;
    font-size: 24px;
  }
  #CourseSection5 .inner .content {
    color: #ffffff;
    font-size: 16px;
  }
  #CourseSection5 .container {
    width: 100%;
  }
  #CourseSection5 .col-sm-12 {
    background: rgba(0,0,0,0.3) !important;
    padding: 0 40px;
  }
  #CourseSection5 .col-sm-12 .box-center {
    padding: 0 40px;
  }
  #CourseSection6 {
    min-height: calc(100vh - 90px);
    height: calc(675vw / 12);
    background: none !important;
  }
  #CourseSection6 .course-back,
  #CourseSection6 .course-date {
    columns: 1;
  }
  #CourseSection6 .course-back {
    padding-top: 24px;
  }
  #CourseSection6 .inner .left,
  #CourseSection6 .inner .right {
    height: calc(100vh - 90px);
  }
  #CourseSection6 .inner .left .title {
    font-size: calc(48vw / 12);
  }
  #CourseSection6 .inner .left .title span {
    display: block;
    margin-top: 15px;
  }
  #CourseSection6 .inner .left .title span a {
    padding: 0px 24px;
  }
  #CourseSection6 .inner .left .content-title * {
    font-size: 16px;
  }
  #CourseSection6 .inner .left .content-date {
    font-size: 24px;
    margin-bottom: 12px;
  }
  #CourseSection6 .inner .left .content {
    font-size: 17px;
  }
  #CourseSection6 .grid .grid-item {
    margin-left: 5px;
    width: calc(100% - 5px);
    height: calc(20% - 25px);
  }
  #CourseSection6 .grid .grid-item .title {
    font-size: 24px;
  }
  #CourseSection6 .grid .grid-item .content {
    font-size: 32px;
  }
  #CourseSection6 .grid .grid-item .remark {
    font-size: 20px;
  }
  #CourseSection6 .grid .grid-item:nth-child(3) {
    margin-top: 0;
  }
  #CourseSection6 .grid .grid-item:nth-child(4) {
    height: calc(40% - 25px);
  }
  .sectionCourseDetail .grid.grid-flex {
    flex-flow: column;
  }
  .sectionCourseDetail .grid.grid-flex .grid-item {
    width: calc(100% - 25px);
  }
  .sectionCourseDetail .grid.grid-flex .grid-item .item-image {
    width: calc(40% - 30px);
    margin-right: 30px;
    padding-top: calc(40% - 30px);
    float: left;
  }
  .sectionCourseDetail .grid.grid-flex .grid-item .title,
  .sectionCourseDetail .grid.grid-flex .grid-item .content,
  .sectionCourseDetail .grid.grid-flex .grid-item .detail {
    display: inline-block;
    display: -webkit-inline-block;
    width: calc(60% - 30px);
  }
  .letterSectionBanner .box-center .title {
    font-size: 24px;
  }
  .letterSectionBanner .box-center .content {
    font-size: 32px;
  }
  .letterSectionSubBanner .box-center .title {
    font-size: 24px;
  }
  .letterSectionSubBanner .box-center .content {
    font-size: 32px;
  }
  .letterSectionContent {
    padding: 20px 0;
  }
  .letterSectionContent .content {
    margin: 30px 0;
  }
  .letterSectionContent .author {
    margin: 30px 0;
  }
  #LetterSection1.letterSectionContent .title {
    font-size: 32px;
  }
  #LetterSection5.letterSectionContent .content {
    font-size: 32px;
  }
  #LetterSection5.letterSectionContent .author {
    font-size: 24px;
  }
}