@media (max-width: 575px) {
  h1,
  .h1,
  h2,
  .h2,
  h3,
  .h3 {
    margin: 10px 0;
  }
  .main-container>section:first-child {
    padding-top: 0;
  }
  .header-mobile .header-item a {
    padding: 20px;
  }
  .header-mobile .header-item>div {
    padding: 20px;
  }
  .header-mobile .header-item {
    font-size: 20px;
  }
  #HomepageBanner {
    padding-top: 100vw;
    top: 0;
    left: 0;
    right: 0;
    height: auto;
    background-position: left top;
    background-size: auto 100vw;
    min-height: 100vw;
    background-attachment: unset;
    background-color: #ffffff;
  }
  #HomepageBanner .layer-white {
    position: relative !important;
    margin-top: calc(100vw - 65px);
    margin-top: 0;
    min-width: unset;
    top: auto !important;
    top: 0 !important;
    bottom: 0 !important;
    bottom: auto !important;
    min-height: calc(100vh - 100vw);
    min-height: unset;
  }
  #HomepageBanner .layer-white .content {
    font-size: 16px;
  }
  #HomepageSection1 {
    padding: 0px 0 60px;
  }
  #HomepageSection1 .title {
    font-size: 40px;
  }
  #HomepageSection1 .content {
    padding-right: 0;
  }
  #HomepageSection1 .author {
    font-size: 25px;
  }
  #HomepageSection2 .box-center,
  #HomepageSection7 .box-center {
    text-align: lecft;
  }
  #HomepageSection2 .box-center .title,
  #HomepageSection7 .box-center .title {
    font-size: 16px;
  }
  #HomepageSection2 .box-center .content,
  #HomepageSection7 .box-center .content {
    font-size: 24px;
  }
  #HomepageSection3,
  #HomepageSection5,
  #HomepageSection6,
  #HomepageSection8 {
    padding: 0px 0 0px;
  }
  #HomepageSection3 .content,
  #HomepageSection5 .content,
  #HomepageSection6 .content,
  #HomepageSection8 .content {
    margin: 40px 0;
    text-align-last: left;
  }
  #HomepageSection3 .btn-custom,
  #HomepageSection5 .btn-custom,
  #HomepageSection6 .btn-custom,
  #HomepageSection8 .btn-custom {
    margin-bottom: 40px;
  }
  #HomepageSection4 .box-center,
  #HomepageSection9 .box-center,
  .contactSectionBanner .box-center {
    text-align: left;
  }
  #HomepageSection4 .box-center .title,
  #HomepageSection9 .box-center .title,
  .contactSectionBanner .box-center .title {
    font-size: 24px;
  }
  #HomepageSection4 .box-center .content,
  #HomepageSection9 .box-center .content,
  .contactSectionBanner .box-center .content {
    font-size: 16px;
  }
  #HomepageSection6 .study-comments-container .swiper-slide {
    width: calc(100vw - 90px);
    margin-bottom: 30px;
  }
  #HomepageSection6 .study-comments-container .swiper-slide .slide-content-div {
    width: calc(100vw - 90px);
  }
  #HomepageSection6 .study-comments-container .swiper-slide .slide-content {
    font-size: 16px;
  }
  #AboutSection0 .inner .title {
    font-size: 32px;
  }
  #InterviewSection0 {
    background-attachment: unset;
    background-position: top;
    background-size: auto 100vw;
    padding-top: 100vw;
    padding-bottom: 0;
  }
  #InterviewSection0 .inner {
    margin: 0;
  }
  #InterviewSection0 .inner .title {
    font-size: 24px;
  }
  #InterviewSection1 .container {
    padding: 0 15px;
  }
  #InterviewSection1 .inner {
    margin: 0 0 0;
  }
  #InterviewSection1 .inner .letter {
    padding: 20px 15px 20px;
    font-size: 16px;
    line-height: 1.6;
  }
  #InterviewSection1 .inner .letter p {
    background-image: repeating-linear-gradient(transparent,transparent 23px,#e3e1e1 24px);
  }
  .InterviewSection2 .inner .title h3 {
    font-size: 48px;
    left: 50px;
  }
  .InterviewSection2 .inner .title h3::before {
    width: 50px;
  }
  .InterviewSection2 .inner .title h3::after {
    right: calc(-100vw * 10 / 12 + 100% + 50px + 72px + 2px);
  }
  .InterviewSection2 .inner .title p {
    padding: 0px 15px;
    font-size: 20px;
  }
  .InterviewSection2 .image-fluid .box-center {
    width: 100%;
  }
  .InterviewSection2 .image-fluid .box-center .content {
    font-size: 24px;
  }
  .sticker-interview {
    width: 32px;
    height: 32px;
  }
  .InterviewSection2 .inner .qa-content {
    margin: 30px 0;
  }
  .InterviewSection2 .inner .qa-end {
    transform: scale(.5);
  }
  .InterviewSection2:last-child {
    margin-bottom: 30px;
  }
  #CourseSection0 {
    margin-top: 65px;
    background-attachment: unset;
    background-position: top;
    background-size: auto 100vw;
    padding-top: calc(100vw - 65px);
  }
  #CourseSection0 .inner {
    margin: 0;
  }
  #CourseSection0 .inner .content {
    font-size: 24px;
  }
  #CourseSection1 {
    padding-top: 100vw;
    background-position: right -30vw;
    background-size: auto 126vw;
    margin-top: -35px;
  }
  #CourseSection1 .inner {
    margin: 0;
    background: #ffffff;
  }
  #CourseSection1 .inner .box-center-div {
    height: 100vw;
  }
  #CourseSection1 .inner .title {
    font-size: 24px;
  }
  #CourseSection1 .grid .grid-item {
    width: calc(100% - 60px);
    transition-delay: 0ms !important;
  }
  #CourseSection1 .grid .grid-item:nth-child(2) {
    border-top: #498f9d 1px solid;
  }
  #CourseSection2 {
    background: -webkit-linear-gradient(top,#498f9d 0%,#498f9d 100%);
    background: -moz-linear-gradient(top,#498f9d 0%,#498f9d 100%);
    background: -ms-linear-gradient(top,#498f9d 0%,#498f9d 100%);
    background: -o-linear-gradient(top,#498f9d 0%,#498f9d 100%);
    background: linear-gradient(top,#498f9d 0%,#498f9d 100%);
    background-size: auto 100vw;
  }
  #CourseSection2 .inner .box-center-div .box-center {
    padding-right: 0;
    width: calc(100vw - 80px);
  }
  .sectionCourseDetail .inner {
    margin: 0;
    background: #ffffff;
  }
  #CourseSection2 .inner .title {
    word-break: break-word;
  }
  #CourseSection2 {
    padding-top: 100vw;
    background-size: auto 100vw;
  }
  #CourseSection2 .inner .box-center-div {
    height: 100vw;
  }
  #CourseSection2 .inner .title {
    font-size: 24px;
  }
  #CourseSection2 .inner .description {
    font-size: 16px;
  }
  #CourseSection2 .inner .box-center-div .box-center .title,
  #CourseSection2 .inner .box-center-div .box-center .description {
    margin: 20px 0;
  }
  .popup .inner {
    max-width: calc(100vw - 60px);
  }
  .popup .inner .contain {
    padding: 15px 20px;
  }
  #CourseSection5 {
    background-size: 100vw auto;
  }
  #CourseSection5 .inner .title {
    font-size: 24px;
  }
  #CourseSection5 .inner .description {
    font-size: 16px;
  }
  #CourseSection5 .inner .content li {
    margin-bottom: 8px;
  }
  #CourseSection6 {
    padding-top: 100vw;
    background-size: 100vw auto;
  }
  #CourseSection6 .inner .box-center-div {
    height: 100vw;
  }
  #CourseSection6 .inner .box-center-div .box-center .title {
    font-size: 24px;
  }
  #LetterSection5.letterSectionContent .content {
    font-size: 20px;
  }
  #LetterSection5.letterSectionContent .author {
    font-size: 17px;
  }
  .letterSectionSubBanner {
    background-attachment: unset;
  }
  .letterSectionBanner {
    background-attachment: unset;
    min-height: 50vh;
  }
  .letterSectionBanner .box-center .title {
    font-size: 16px;
  }
  .letterSectionBanner .box-center .content {
    font-size: 24px;
  }
  .letterSectionContent {
    padding: 20px 0 40px;
  }
  .contactSectionContent {
    padding-top: 0;
  }
}