.sec {
    display: block;
    width: 100%;
    position: relative;
}

.sec-content {
    width: 100%;
}

.index-main-content {
    width: 100%;
}

.landing_primary {
    margin-bottom: 30px;
}

.carousel_container {
    width: 100%;
}

.carousel_unit {
    display: block;
    width: 100%;
}

.carousel_mob_img {
    width: 100%;
}

.steps_section {
    width: 100%;
    background-color: #525a6a;
    padding: 60px 0 0 0;
}

.steps {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.step_unit {
    position: relative;
    width: 100%;
    margin-bottom: 30px;
}

.step_order_img {
    min-width: 57px;
    max-width: 85px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
}

.step3 {
    margin-bottom: 0;
}

.step_detail {
    width: 100%;
    position: relative;
    z-index: 1;
    padding: 30px;
    padding-bottom: 0;
    color: #ffffff;
}

.step_title {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 8px;
}

.step_description {
    display: block;
    font-size: 14px;
}

.color_bars {
    width: 100%;
    margin-top: 60px;
    display: flex;
    align-items: center;
}

.color_bar {
    height: 16px;
}

.primary_bar {
    flex: 1 1 91px;
    background-color: #fd9e1c;
}

.secondary_bar {
    flex: 1 1 81px;
    background-color: #525a6a;
}

.tertiary_bar {
    flex: 3 3 203px;
    background-color: #b2b2b2;
}

.service_browse_section {
    width: 100%;
    padding: 60px 30px 45px 30px;
    /* padding-top: 60px; */
    /* padding-bottom: 45px; */
}

.service_browse_content {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.service_browse_unit {
    width: calc(50vw - 43px);
    height: calc(50vw - 43px);
    margin-right: 8px;
    margin-bottom: 15px;
    display: block;
    position: relative;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: 100%;
    background-color: black;
}

.service_browse_unit:nth-child(2n+2) {
    margin-right: 0;
}

.service_browse_detail {
    width: calc(100% - 30px);
    position: absolute;
    left: 15px;
    bottom: 15px;
}

.service_browse_title {
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
}

.service_browse_en_title {
    color: #ffffff;
    font-size: 12px;
}

.teacher_and_articles_section {
    width: 100%;
    padding: 60px 30px;
    background-color: #ececec;
}

.motion_energy_decoration {
    width: 298px;
    position: absolute;
    top: -8.5px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.teacher_and_articles_content {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.teacher_part {
    width: 100%;
}

.teacher_part .view_more_btn {
    margin-top: 10px;
    margin-bottom: 40px;
}

.articles_part {
    width: 100%;
    margin: 0 auto;
}

.teacher_wrapper {
    margin-top: 40px;
    width: 100%;
    display: flex;
}

.teacher_carousel_prev,
.teacher_carousel_next {
    flex: 0 0 40px;
}

.teacher_carousel_prev {
    margin-right: 15px;
}

.teacher_carousel_next {
    margin-left: 15px;
}


/* Slick Plugin Css Adjustment */

.slick-next,
.slick-prev {
    width: 40px;
    height: 40px;
    opacity: 0;
}

.slick-next {
    right: -58px
}

.slick-prev {
    left: -58px
}


/* Slick Plugin Css Adjustment End */

.teacher_carousel {
    display: block;
    width: calc(100% - 110px);
    flex: 1 1 auto;
}

.teacher_link_unit_box {
    width: 100%;
    margin-bottom: 30px;
    margin-right: 20px;
}

.teacher_link_unit {
    width: 100%;
    display: flex;
    flex-direction: column;
}

.teacher_face_img {
    width: 100%;
}

.teacher_seperator {
    background-color: #fae646;
    height: 3px;
}

.teacher_name_box {
    width: 100%;
    background-color: #525a6a;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.teacher_name {
    color: #ffffff;
    font-size: 16px;
}

.articles_wrapper {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    margin-top: 40px;
}

.article_unit {
    display: block;
    margin-bottom: 30px;
    padding-bottom: 65px;
}

.article_unit:last-child {
    margin-bottom: 0;
}

.article_body {
    display: flex;
    flex-direction: column;
}

.img_resize {
    display: flex;
    width: 100%;
    max-width: 400px;
    height: 300px;
    overflow-y: hidden;
    align-items: center;
}

.article_link_tag {
    display: block;
    width: 25%;
    position: absolute;
    right: 0;
    bottom: 25px;
    max-width: 140px;
    z-index: 2;
    background-color: #f6ee20;
    padding: 8px 15px;
    font-size: 12px;
    font-weight: 500;
    color: #747474;
    text-align: center;
}

.theme-title-unit {
    width: 120px;
    margin: 0 auto;
}

.theme-title-text {
    width: inline-block;
    font-size: 30px;
    font-weight: 500;
}

.theme-white {
    color: #ffffff;
}

.theme-gray {
    color: #707070;
}

.theme-title-underline {
    width: 100%;
    height: 3px;
    background-color: #fae646;
}

.theme-wrapper {
    width: 100%;
    margin-top: 40px;
}

.activity_section {
    width: 100%;
    background-color: #666666;
    padding: 40px 30px;
    background-image: none;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

.activity_container {
    margin: 0 auto;
}

.activity_link_unit {
    width: 100%;
    display: block;
    margin-bottom: 30px;
}

.activity_link_unit:last-child {
    margin-bottom: 0;
}

.activity_img {
    width: 100%;
}

.activity_name {
    display: block;
    width: 100%;
    text-align: center;
    color: #ffffff;
    font-size: 24px;
    margin-top: 15px;
}

.title_author_container {
    display: flex;
    align-items: center;
    width: 100%;
    margin-top: 30px;
}

.author_title {
    font-size: 16px;
    color: #e66e0f;
    display: block;
    margin-right: 5px;
    font-weight: normal;
}

.author_name {
    font-size: 16px;
    color: #b2b2b2;
    display: block;
    font-weight: normal;
}


/* RWD Start =================================== */

@media (min-width: 375px) {
    .service_browse_unit {
        width: calc(50vw - 43px);
        height: calc(50vw - 43px);
        margin-right: 8px;
        margin-bottom: 15px;
    }
    .service_browse_title {
        font-size: 16px;
    }
}

@media (min-width: 480px) {
    .motion_energy_decoration {
        width: calc(100% - 80px);
        min-width: 298px;
        max-width: 1180px;
        top: -0.5%;
    }
}

@media (min-width: 640px) {
    .carousel_web_img {
        display: block !important;
        width: 100%;
        /* height: 946px; */
        /* background-position: center; */
        /* background-repeat: no-repeat; */
        /* background-size: cover; */
    }
    .article_unit {
        display: flex;
        padding-bottom: 0;
    }
    .article_img {
        width: 100%;
        max-width: 400px;
        min-height: 300px;
    }
    .article_unit .card-body {
        padding: 50px 130px 45px 40px;
        /* padding-right: 130px; */
    }
    .article_link_tag {
        width: 25%;
        right: -15px;
        bottom: 25px;
        max-width: 140px;
        padding: 8px 25px;
        font-size: 14px;
    }
    .acticity_wrapper {
        display: flex;
        flex-wrap: wrap;
    }
    .activity_section {
        padding-top: 60px;
        padding-bottom: 60px;
        background-image: url(../img/web_activityback.png);
    }
    .activity_link_unit {
        width: calc(50% - 10px);
        margin-right: 20px;
        margin-bottom: 20px;
    }
    .activity_link_unit:nth-child(2n+2) {
        margin-right: 0;
    }
    .title_author_container {
        margin-top: auto;
    }
}

@media (min-width: 768px) {
    .steps_section {
        padding-top: 70px;
    }
    .color_bars {
        margin-top: 70px;
    }
    .steps_section .sec-content {
        margin: 0 auto;
    }
    .steps {
        width: 100%;
        flex-direction: row;
        margin: 0 auto;
    }
    .step_unit {
        width: 33.3333%;
    }
    .step_detail {
        padding-left: 50px;
        padding-right: 60px;
    }
    .service_browse_unit {
        width: calc(40vw - 45px);
        height: calc(40vw - 45px);
        margin-right: 25px;
        margin-bottom: 25px;
        max-width: 447px;
        max-height: 447px;
    }
    .service_browse_unit:nth-child(2n+2) {
        margin-right: 0;
    }
    .service_browse_title {
        font-size: 20px;
    }
    .service_browse_en_title {
        font-size: 14px;
    }
    .teacher_link_unit_box {
        width: calc(50% - 40px);
    }
    .teacher_link_unit {
        /* width: calc(33.333% - 16.666px); */
        /* margin-right: 25px; */
        /* margin-bottom: 25px; */
    }
    /* .teacher_link_unit:nth-child(2n+2) {
    margin-right: 25px;
  }

  .teacher_link_unit:nth-child(3n+3) {
    margin-right: 0;
  } */
    .teacher_part .view_more_btn {
        margin-top: 60px;
        margin-bottom: 90px;
    }
    .activity_link_unit {
        width: calc(33.3333% - 25px);
        margin-right: 25px;
        margin-bottom: 25px;
        max-width: 436px;
    }
    .activity_link_unit:nth-child(2n+2) {
        margin-right: 25px;
    }
    .activity_link_unit:nth-child(3n+3) {
        margin-right: 0px;
    }
    .activity_name {
        text-align: left;
    }
    .acticity_wrapper {
        margin-top: 80px;
    }
    .service_browse_section {
        padding: 60px 0 45px 0;
    }
    .service_browse_content {
        padding-left: 100px;
        padding-right: 100px;
    }
    .teacher_carousel_prev,
    .teacher_carousel_next {
        flex: 0 0 60px;
    }
    .teacher_carousel_prev {
        margin-right: 15px;
    }
    .teacher_carousel_next {
        margin-left: 15px;
    }
    /* Slick Plugin Css Adjustment */
    .slick-next,
    .slick-prev {
        width: 60px;
        height: 60px;
    }
    .slick-next {
        right: -80px
    }
    .slick-prev {
        left: -80px
    }
    /* Slick Plugin Css Adjustment End */
    .teacher_carousel {
        width: calc(100% - 150px);
    }
}

@media (min-width: 1024px) {
    /* .teacher_link_unit {
    width: calc(25% - 25px);
    max-width: 312px;
  }

  .teacher_link_unit:nth-child(2n+2) {
    margin-right: 25px;
  }

  .teacher_link_unit:nth-child(3n+3) {
    margin-right: 25px;
  }

  .teacher_link_unit:nth-child(4n+4) {
    margin-right: 0;
  } */
    .teacher_name {
        font-size: 20px;
    }
    .motion_energy_decoration {
        top: -1%;
    }
    .teacher_and_articles_section {
        padding-top: 120px;
        padding-bottom: 90px;
    }
    .theme-title-unit {
        width: 260px;
    }
    .theme-title-underline {
        height: 6px;
    }
    .theme-title-text {
        font-size: 64px;
    }
    .activity_section {
        padding-top: 80px;
        padding-bottom: 80px;
        background-image: url(../img/web_activityback.png);
    }
    .activity_section .view_more_btn {
        margin-bottom: 40px;
        margin-top: 100px;
    }
    .acticity_wrapper {
        margin-top: 100px;
    }
    .title_author_container {
        /* margin-top: 50px; */
    }
}

@media (min-width: 1200px) {
    .title_author_container {
        /* margin-top: 60px; */
    }
    .service_browse_title {
        font-size: 30px;
    }
    .service_browse_en_title {
        font-size: 18px;
    }
    .step_order_img {
        left: 60px;
    }
    .step_detail {
        max-width: 320px;
        margin: 0 auto;
    }
    .motion_energy_decoration {
        width: calc(100% - 80px);
        position: absolute;
        left: 78px;
        transform: initial;
    }
    .service_browse_unit {
        width: calc(22vw - 45px);
        height: calc(22vw - 45px);
    }
    .service_browse_content {
        padding-left: 200px;
        padding-right: 200px;
    }
    .service_browse_unit:nth-child(2n+2) {
        margin-right: 25px;
    }
    .service_browse_unit:nth-child(3n+3) {
        margin-right: 0;
    }
    .title_author_container {
        /* margin-top: 70px; */
    }
}

@media (min-width: 1400px) {
    .teacher_link_unit_box {
        width: calc(25% - 30px);
        margin-right: 30px;
    }
    .service_browse_content {
        padding-left: 265px;
        padding-right: 265px;
    }
    .teacher_carousel_prev,
    .teacher_carousel_next {
        flex: 0 0 80px;
    }
    .teacher_carousel_prev {
        margin-right: 20px;
    }
    .teacher_carousel_next {
        margin-left: 20px;
    }
    /* Slick Plugin Css Adjustment */
    .slick-next,
    .slick-prev {
        width: 80px;
        height: 80px;
    }
    .slick-next {
        right: -105px
    }
    .slick-prev {
        left: -105px
    }
    /* Slick Plugin Css Adjustment End */
    .teacher_carousel {
        width: calc(100% - 200px);
    }
}

@media (min-width: 1500px) {
    .motion_energy_vertical_dots {
        width: 109px;
        display: block !important;
        position: absolute;
        transform: rotate(90deg);
        left: 10px;
        top: 40px;
        z-index: 0;
    }
    .articles_part {
        position: relative;
    }
    .motion_energy_horizonal_dots {
        width: 109px;
        display: block !important;
        position: absolute;
        left: -100px;
        top: -160px;
        z-index: 0;
    }
    .article_unit .card-body {
        padding-right: 115px;
    }
    .article_link_tag {
        width: 25%;
        right: -30px;
        bottom: 25px;
        max-width: 140px;
        padding: 8px 25px;
        font-size: 14px;
    }
}

@media (min-width: 1920px) {
    .service_browse_unit {
        width: calc(24vw - 45px);
        height: calc(24vw - 45px);
    }
}