.slide--center {
    width: 100%;
    color: #fff;
}

.slide--center {
    width: 100%;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide-11,
.slide-13,
.slide-15,
.slide-17 {
    background-color: var(--slide-grey-color);
    font-family: 'Source Sans Pro', sans-serif;
}

.slide-11 .slide {
    padding-top: 91px;
    padding-bottom: 96px;
}

.slide__content {
    text-align: center;
}

.slide__header {
    font-weight: 700;
}

.slide__header--11 {
    font-size: 5.2rem;
    letter-spacing: -0.4px;
    line-height: 55px;
}

.slide__sub.slide__sub--11 {
    font-weight: 600;
    margin-bottom: 20px !important;
    margin-top: 26px;
}

.slide__sub--11 {
    font-size: 2.5rem;
    color: rgb(255, 192, 199);
    line-height: 37.5px;
    margin: 19px 0;
}

.slide-11 .slide__body {
    margin-bottom: 50px;
}

.slide__items {
    list-style-type: none;
    font-size: 2rem;
    line-height: 36px;
    font-weight: 600;
    text-decoration-style: solid;
    display: inline-block;
    margin: 0;
}

.slide__items--11 {
    padding-left: 85px;
    margin-top: 15px;
}

.slide__item .slide__item-icon {
    margin-right: 15px;
    display: inline-flex;
    margin-bottom: -4.9px;
}

.slide__item-strong {
    font-weight: 700;
}

.slide__btn {
    margin: 0 auto;
    text-align: center;
    display: block;
}

.slide__btn a {
    display: block;
    text-decoration: none;
    font-weight: 600;
    color: var(--white-color);
}

.slide__btn:hover {
    background-color: var(--btn-hover-color);
    cursor: pointer;
}

.slide__btn--learn-More {
    width: 300px;
    height: 52px;
    border-radius: 25px;
    line-height: 52px;
    font-size: 2rem;
    background-color: var(--btn-color);
    margin-top: 32px !important;
}

.slide {
    font-family: 'Source Sans Pro', sans-serif;
}

.slide--center {
    width: 100%;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
}

HEAD .slide {
    font-family: 'Source Sans Pro', sans-serif;
}

.slide--center {
    width: 100%;
    color: var(--white-color);
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide__sub {
    font-weight: 600;
}

.slide__content {
    text-align: center;
}

.slide__header {
    font-weight: 700;
}

.slide-11 *,
.slide-12 *,
.slide-13 *,
.slide-14 *,
.slide-15 *,
.slide-16 *,
.slide-17 *,
.slide-18 *,
.footer * {
    padding: 0;
    margin: 0;
}


.slide-12 {
    color: #000;
    background-color: var(--slide-12-color);
    padding: 80px 0 95px 0;
}

.slide-12 .slide {
    margin: 0 auto;
    text-align: center;
    display: block;
}

.slide-12 .slide__header--12 {
    font-size: 65px;
    line-height: 97.5px;
    margin-bottom: 5px;
}

.slide__sub--12.slide__sub {
    font-size: 20px;
    line-height: 30px;
    margin-bottom: 26px;
}

.slide-12 .slide__img--12:hover {
    opacity: 0.6;
}

.slide-11,
.slide-13,
.slide-15,
.slide-17 {
    background-color: var(--slide-grey-color);
    font-family: 'Source Sans Pro', sans-serif;
}

.slide-11 .slide {
    padding-top: 91px;
    padding-bottom: 96px;
}

.slide__content {
    text-align: center;
}

.slide__header {
    font-weight: 700;
}

.slide__header--11 {
    font-size: 5.2rem;
    letter-spacing: -0.4px;
    line-height: 55px;
    margin: 0;
}

.slide__sub {
    font-weight: 600;
}

.slide-11 .slide__body {
    margin-bottom: 50px;
}

.slide-11 *,
.slide-12 *,
.slide-13 *,
.slide-14 *,
.slide-15 *,
.slide-16 *,
.slide-17 *,
.slide-18 *,
.footer * {
    padding: 0;
    margin: 0;
}

.slide-11,
.slide-13,
.slide-15,
.slide-17 {
    background-color: var(--slide-grey-color);
}

.slide__content {
    text-align: center;
}

.slide__header {
    font-weight: 700;
}

.item__strong {
    font-weight: 700;
}

.slide__sub {
    font-weight: 600;
}

.slide__items {
    list-style-type: none;
    font-size: 20px;
    line-height: 36px;
    font-weight: 600;
    text-decoration-style: solid;
    display: inline-block;
    margin: 0;
}

.slide__items--11 {
    padding-left: 85px;
    margin-top: 15px;
}

.slide__item .slide__item-icon {
    margin-right: 15px;
    display: inline-flex;
    margin-bottom: -4.9px;
}

.slide__item-strong {
    font-weight: 700;
}

.slide__item .slide__item-icon {
    margin-right: 15px !important;
    display: inline-flex;
    margin-bottom: -4.9px;
}

.slide__btn {
    margin: 0 auto;
    text-align: center;
    display: block;
}

.slide__btn a {
    display: block;
    text-decoration: none;
    font-weight: 600;
    color: var(--white-color);
}

.slide__btn:hover {
    background-color: var(--btn-hover-color);
    background-color: var(--btn-hover-color);
    cursor: pointer;
}

.slide__btn--learn-More {
    width: 300px;
    height: 52px;
    border-radius: 25px;
    line-height: 52px;
    font-size: 2rem;
    background-color: var(--btn-color);
}

.slide-14 {
    background-color: var(--slide-14-color);
}

.slide__img--14:hover {
    opacity: 0.8;
    cursor: pointer;
}

/* app */

.app {
    position: relative;
}

.content {
    margin-top: -2px;
    width: 100%;
}

#test {
    position: fixed;
}

.navbar {
    margin: 0;
    /* padding-right: 16px; */
    width: 100%;
    display: flex;
    justify-content: space-between;
    /* position: absolute; */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000000;
    background-color: var(--white-color);
    /* background-color: #1d2a35; */
    /* color: #000; */
    height: 54px;
}

.navbar-body-left {
    display: flex;
    align-items: center;
    z-index: 2;
    position: relative;
}

.navbar__home {
    padding: 0px 19px;
}

.navbar__home:hover {
    opacity: .8;
}

.navbar__home-img {
    height: 46px;
    margin-top: 8px;
}

.navbar__selection {
    text-decoration: none;
    color: var(--text-color);
    font-size: 1.6rem;
    padding: 20px 20px;
}

.navbar__selection:hover {
    background-color: #04AA6D;
    color: var(--white-color);
}

.navbar__selection-item {
    display: flex;
    align-items: center;
    margin: 0;
}

.navbar__selection-text {
    margin: 0;
    margin-right: 4px;
    font-weight: 400;
}

.navbar__search {
    height: 36px;
    width: 178px;
    border: 1px solid #cbcbcb;
    border-radius: 26px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 10px 0px;
    margin-left: 8px;
    background-color: white;
}

.navbar__search-icon {
    font-size: 1.6rem;
    padding: 10px;
    border-radius: 28px;
}

.navbar__search-input {
    width: 100%;
    height: 34px;
    border-top-left-radius: 25px;
    border-bottom-left-radius: 25px;
    border: none;
    margin-left: 12px;
    outline: none;
}

.navbar__search-input::placeholder {
    font-style: italic;
}

.navbar__search-icon:hover {
    background-color: #f1f1f1;
    cursor: pointer;
}

.navbar__dark-mode {
    margin-left: 6px;
    margin-right: 8px;
}

.navbar__dark-mode-icon {
    padding: 10px 10px;
    font-size: 1.6rem;
}

.navbar__dark-mode-icon:hover {
    background-color: #f1f1f1;
    cursor: pointer;
    border-radius: 50%;
}

.navbar-body-right {
    display: flex;
    /* align-items: center; */
    overflow: hidden;
}

.navbar__service-list {
    display: flex;
    align-items: center;
    margin-right: 10px;
}

.navbar__service {
    display: flex;
    align-items: center;
    padding: 8px 10px;
    border-radius: 25px;
    height: 38px;
    animation: opacity 0.1s ease;
}

.navbar_right-icon {
    font-size: 1.6rem;
    color: #b48ff6;
}

.navbar_right-text {
    font-size: 1.6rem;
    margin-left: 4px;
}

.navbar__service:hover {
    background-color: #f1f1f1;
    cursor: pointer;
}

.navbar__access {
    display: flex;
    align-items: center;
    min-width: 154px;
}

.navbar__acess-form {
    font-size: 1.6rem;
    /* padding: 8px 16px; */
    text-decoration: none;
    display: flex;
    margin-right: 16px;
}

.navbar__acess-sign-up {
    text-decoration: none;
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 8px 16px;
    border-radius: 25px;
    z-index: 1;
    padding-right: 20px;
}

.navbar__acess-log-in {
    background-color: #d9eee1;
    text-decoration: none;
    color: var(--black-color);
    padding: 8px 23px 8px 30px;
    margin-left: -24px;
    border-radius: 25px;
}

.navbar__acess-sign-up:hover {
    background-color: #059862;
}

.navbar__acess-log-in:hover {
    background-color: #059862;
    color: var(--white-color);
}


/* Modal */

.modal {
    position: fixed;
    top: 54px;
    left: 0;
    right: 0;
    bottom: 0;
    overflow-y: auto;
    display: none;
    z-index: 10000;
}

.modal-services,
.modal-certificates,
.modal-tutorials,
.modal-exercises {
    width: 100%;
    background-color: #282A34;
    padding-top: 34px;
    padding-bottom: 34px;
    display: none;
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
}

.modal-tutorials__content {
    max-height: 100%;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    width: 950px;
    padding: 0 16px;
}

.mdt-header {
    display: flex;
    align-items: center;
}

.head {
    color: #FFF4A2;
    font-size: 3.2rem;
    width: 37%;
}

.filter {
    background-color: #464645;
    width: 314px;
    height: 46px;
    border-radius: 25px;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.filter__search {
    font-size: 1.6rem;
    background-color: #464645;
    outline: none;
    border: none;
    width: 100%;
    height: 100%;
    color: var(--white-color);
    padding-left: 22px;
}

.filter__search::placeholder {
    font-style: italic;
    color: var(--white-color);
}

.fiter__icon {
    font-size: 1.6rem;
    color: var(--white-color);
    padding: 15px 19px;
    position: absolute;
    right: 0px;
    top: 0px;
    border-radius: 50%;
}

.fiter__icon:hover {
    background-color: rgba(52, 52, 52, 0.5);
    cursor: pointer;
}

.close {
    position: absolute;
    display: block;
    top: 10px;
    right: 10px;
    width: 64px;
    height: 64px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
}

.close:hover {
    cursor: pointer;
    background-color: #fbfbfb;
    color: #000;
}

.close__icon {
    font-size: 4rem;
    color: var(--white-color);
    padding: 16px;
}

.close__icon:hover {
    color: #000;
}

.list-left-top {
    margin-bottom: 52px;
}

.list-left__header {
    color: #fdf4a1;
    font-size: 2.4rem;
    margin-bottom: 36px;
    font-weight: 500;
}

.list-left__list {
    padding: 0;
}

.list-left__list-item {
    list-style: none;
    margin: 16px 0;
}

.list-item__head {
    font-size: 1.8rem;
    color: var(--white-color);
    padding: 2px 6px;
    margin-bottom: 32px;
    padding-bottom: 7px;
}

.list-item__head:hover {
    background-color: #ccc;
    color: var(--black-color);
    border-radius: 4px;
}

.list-left__list-item a:first-child {
    text-decoration: none;
}

.list-item-link {
    font-size: 1.2rem;
    color: #fdf4a1;
    padding: 2px 6px;
    margin-bottom: 20px;
}

.list-item-link:hover {
    background-color: #059862;
    color: var(--white-color);
    border-radius: 4px;
}

.mdt-course-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-left: 8px;
}

.list-item__head-learn {
    font-size: 1.5rem
}

.list-left__list--hot {
    padding: 3px 10px;
    font-size: 1.1rem;
    background-color: #d7242b;
    border-radius: 25px;
    border: 1px solid var(--black-color);
    margin-bottom: 3px;
}

.list-left__list--new {
    padding: 3px 10px;
    font-size: 1.1rem;
    background-color: #00ab6b;
    border-radius: 25px;
    border: 1px solid var(--black-color);
}

.select {
    background-color: #272b35;
    color: var(--white-color);
}

.ex_and_quiz {
    margin-top: 52px;
}

.ex,
.quiz {
    height: 32px;
    background-color: #20232b;
    border: 1px solid grey;
    border-radius: 5px;
    margin-bottom: 16px;
    text-align: center;
    line-height: 32px;
}

.ex__link,
.quiz__link {
    font-size: 1.8rem;
    color: var(--white-color);
    /* padding: 5px 19px; */
    text-decoration: none;
    font-weight: 400;
    border-radius: 4px
}

.quiz__link {
    padding: 4px 39px;
}

.modal-services__note {}

.modal-services__note-text {
    font-size: 1.7rem;
    color: var(--white-color);
    line-height: 3.2rem;
    padding: 30px 13px 15px 13px;
}

.modal-services__column {
    display: flex;
    justify-content: space-around;
    padding: 8px 12px;
}

.modal-services__row {
    background-color: #3d404a;
    width: 290px;
    border-radius: 5px;
    padding: 8px 16px;
}

.row__heading {
    font-size: 2rem;
    color: #fdf5a5;
    margin: 28px 8px;
    display: flex;
    justify-content: space-between;
}

.row__text {
    font-size: 1.4rem;
    color: var(--white-color);
    margin-bottom: 28px;
}

.row__text-2 {
    margin-top: -20px;
}

.modal-services__socials {
    padding: 100px 17px 20px;
}

.modal-services__socials-icon {
    font-size: 2.4rem;
    color: var(--white-color);
    padding: 12px 16px;
    margin-right: 10px;
    height: 50px;
    display: inline-flex;
    align-items: center;
    border-radius: 5px;
}

.modal-services__socials-icon:hover {
    background-color: #fbfbfb;
    color: var(--black-color);
    cursor: pointer;
}

.row__img {
    height: 35px;
    transform: translateY(-18px);
}

.modal-services__row--hover:hover {
    background-color: #000;
    cursor: pointer;
}

.ex_quiz--hover:hover .ex__link,
.ex_quiz--hover:hover .quiz__link {
    color: var(--black-color) !important;
    background-color: #ccc;
    cursor: pointer;
}

.ex__link-certificates--padding {
    padding: 5px 29px;
}

.ex__link-exercises--padding {
    padding: 5px 19.5px;
}

.quiz__link-exercises--padding {
    padding: 5px 40px;
}


/* Header */

.header {
    margin-top: 54px;
    width: 100%;
    background-color: #282b35;
    display: flex;
    z-index: 2;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}

.header__list {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-around;
    overflow-x: auto;
    white-space: nowrap;
    padding: 0 0px;
    margin-bottom: 0;
    overflow-x: auto;
    white-space: nowrap;
    -ms-overflow-style: none;
    scrollbar-width: none;
    margin: 0;
}

.header__list::-webkit-scrollbar {
    display: none;
    /* Ẩn thanh cuộn trong trình duyệt WebKit (Chrome, Safari) */
}

.header__item:hover {
    background-color: #000;
    cursor: pointer;
}

.header__link {
    text-transform: uppercase;
    text-decoration: none;
    font-size: 1.5rem;
    padding: 8px 15px;
    display: inline-block;
    width: 100%;
    color: var(--white-color);
    font-weight: 300;
}

.header::-webkit-scrollbar {
    height: 8px;
    width: 8px;
}

.header::-webkit-scrollbar-thumb {
    background-color: #555;
    border-radius: 10px;
}

.scroll-btn {
    background-color: #292a35;
    color: var(--white-color);
    border: none;
    padding: 0px 12px;
}

.scroll-btn:hover {
    background: linear-gradient(to left, #000 95%, transparent 100%);
    cursor: pointer;
}

.slide__btn--learn-More {
    width: 300px;
    height: 52px;
    border-radius: 25px;
    line-height: 52px;
    font-size: 20px;
    background-color: var(--btn-color);
}


/* Content */


/* Slide 1 */

.slide-1 {
    background-image: url(../img/backGroundSlide1.webp), url(../img/backgroundslide1.2.webp);
    background-repeat: no-repeat, repeat;
    background-position: 90% 60%, center center;
    /*left top*/
    padding-top: 90px;
    padding-bottom: 90px;
    margin-top: 88px;
}

.slide-1__content {
    text-align: center;
    max-width: 980px;
    padding-left: 90px;
    padding-right: 90px;
    margin: auto;
}

.slide-1__heading {
    font-size: 7rem;
    font-weight: 700;
    color: var(--white-color);
    line-height: 106px;
}

.slide-1__text {
    margin-top: 30px;
    margin-bottom: 10px;
    font-size: 2.3rem;
    color: #ffea8c;
    font-weight: 700;
    margin-bottom: 42px;
}

.slide-1__search {}

.slide-1__search-input {
    width: 48%;
    height: 48px;
    margin-right: -3px;
    border: none;
    border-top-left-radius: 25px;
    border-bottom-left-radius: 25px;
    padding-left: 24px;
    font-size: 1.7rem;
    border: 1px solid #282A35;
    border-right: 1px solid #04AA6D;
    background-color: var(--white-color);
    outline: none;
}

.slide-1__search-btn {
    width: 12%;
    height: 48px;
    transform: translateY(0px);
    border: none;
    font-size: 1.7rem;
    background-color: var(--primary-color);
    color: var(--white-color);
    border-top-right-radius: 25px;
    border-bottom-right-radius: 25px;
    margin-bottom: 42px;
}

.slide-1__search-btn:hover {
    background-color: #059862;
    color: var(--white-color);
    cursor: pointer;
}

.slide-1__search-icon {
    color: var(--white-color);
}

.slide-1__link {
    font-size: 2.4rem;
    color: var(--white-color);
}

.slide-1__link:hover {
    color: #ffea8c;
}


/* Slide 2, 3, 4, 5, 6 */

.slide-2,
.slide-3,
.slide-4,
.slide-5,
.slide-6 {
    color: var(--black-color);
    display: flex;
    padding: 90px 100px;
    justify-content: space-evenly;
    flex-wrap: wrap;
}

.slide-2 {
    background-color: #d9eee1;
}

.slide-3 {
    background-color: #fef4a1;
}

.slide-4 {
    background-color: #282b35;
}

.slide-5 {
    background-color: #f3ecea;
}

.slide-6 {
    background-color: #95d4d3;
}

.slide-2__content-1,
.slide-3__content-1,
.slide-4__content-1,
.slide-5__content-1,
.slide-6__content-1 {
    text-align: center;
    padding: 30px 0;
}

.content-1__heading {
    font-size: 10rem;
    color: var(--black-color);
    line-height: 10rem;
    font-weight: 700;
}

.slide-4__content-1 .content-1__heading {
    font-size: 7rem;
    color: var(--white-color);
}

.content-1__text {
    font-size: 2rem;
    margin: 24px 0;
    font-weight: 700;
    margin-bottom: 42px;
}

.slide-4__content-1 .content-1__text {
    color: var(--white-color);
}

.content-1__link-1,
.content-1__link-2,
.content-1__link-3,
.content-1__link-4 {
    text-decoration: none;
    font-size: 1.8rem;
    padding: 13px 16px;
    display: block;
    font-weight: 500;
}

.content-1__link-1:hover {
    background-color: #059862;
}

.content-1__link-2:hover {
    background-color: #fff080;
}

.content-1__link-3:hover {
    background-color: #000;
}

.content-1__link-4:hover {
    background-color: #ffb3bb;
}

.content-1__link {
    width: 200px;
    margin: 24px auto;
}

.content-1__link-1 {
    color: var(--white-color);
    background-color: var(--primary-color);
    border-radius: 25px;
}

.content-1__link-2 {
    color: var(--black-color);
    background-color: #fef4a1;
    border-radius: 25px;
}

.content-1__link-3 {
    color: var(--white-color);
    background-color: #282b35;
    border-radius: 25px;
}

.slide-4__content-1 .content-1__link-3 {
    background-color: var(--white-color);
    color: var(--black-color);
}

.content-1__link-4 {
    color: var(--black-color);
    background-color: #ffc0c7;
    border-radius: 25px;
}

.slide-2__content-2,
.slide-3__content-2,
.slide-4__content-2,
.slide-5__content-2,
.slide-6__content-2 {
    background-color: #e7e9eb;
    padding: 16px 18px;
    box-shadow: 0 0 10px rgba(52, 52, 52, 0.5);
    border-radius: 5px;
    height: 100%;
    width: 36%;
}

/* .slide-2__content-2 {
    padding: 16px 16px 16px 16px;
}

.slide-3__content-2 {
    padding: ;
} */

.content-2__heading {
    font-size: 2.4rem;
    margin: 10px 0;
    font-weight: 700;
    margin-bottom: 30px;
}

.content-2__text {
    background-color: white;
    padding: 0px 12px;
    margin: 16px 0;
    border-left: 4px solid var(--primary-color);
}

pre {
    font-size: 1.5rem;
    line-height: 1.6;
    color: #973148;
    min-height: 300px;
    min-width: 300px;
    /* background-color: #151f2b; */
}

.content-2__link {
    color: var(--white-color);
    font-size: 1.8rem;
    width: 200px;
    text-decoration: none;
    display: block;
}

.content-2__btn {
    padding: 11px 16px;
    background-color: var(--primary-color);
    border: none;
    border-radius: 25px;
}

.content-2__btn:hover {
    background-color: #059862;
    cursor: pointer;
}


/*slide 7 den 10*/

.program-a,
.program-b,
.program-c,
.program-d {
    margin: 0;
    padding: 0;
}

.program-a {
    background-color: #2c2f38;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    padding-top: 80px;
}

.program-a .container1 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-gap: 40px 90px;
    margin-bottom: 40px;
    width: 90%;
}

.program-a .container2 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 40px 90px;
    width: 90%;
    line-height: 1.6;
}

.card1,
.card2 {
    background-color: #ffc0c7;
    padding: 40px 4px;
    border-radius: 4px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    font-weight: 600;
}


.card2 {
    font-size: 3rem;
}

.card1:nth-of-type(2) {
    background-color: #fef4a1;
}

.card1:nth-of-type(3) {
    background-color: #f3ecea;
}

.card1:nth-of-type(4) {
    background-color: #d9eee1;
}

.card1:nth-of-type(5) {
    background-color: #95d4d3;
}

.card1:nth-of-type(6) {
    background-color: #e7e9eb;
}

.card1:nth-of-type(7) {
    background-color: #e9b2b9;
}

.card1:nth-of-type(8) {
    background-color: #e9e098;
}

.card h2,
.card1 h2 {
    margin: 0;
    font-size: 3rem;
    color: var(--black-color);
    margin: 16px;
}

.card1 p {
    color: #292525;
    margin: 15px 0;
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 32px;
}

.card2:nth-of-type(1),
.card2:nth-of-type(6),
.card2:nth-of-type(11),
.card2:nth-of-type(16),
.card2:nth-of-type(21),
.card2:nth-of-type(26),
.card2:nth-of-type(31),
.card2:nth-of-type(36) {
    background-color: #f7f2f0;
}

.card2:nth-of-type(2),
.card2:nth-of-type(7),
.card2:nth-of-type(12),
.card2:nth-of-type(17),
.card2:nth-of-type(22),
.card2:nth-of-type(27),
.card2:nth-of-type(32) {
    background-color: #84a9a5;
}

.card2:nth-of-type(3),
.card2:nth-of-type(8),
.card2:nth-of-type(13),
.card2:nth-of-type(18),
.card2:nth-of-type(23),
.card2:nth-of-type(28),
.card2:nth-of-type(33) {
    background-color: #63c3b9;
}

.card2:nth-of-type(4),
.card2:nth-of-type(9),
.card2:nth-of-type(14),
.card2:nth-of-type(19),
.card2:nth-of-type(24),
.card2:nth-of-type(29),
.card2:nth-of-type(34) {
    background-color: #f5c2c2;
}

.card2:nth-of-type(5),
.card2:nth-of-type(10),
.card2:nth-of-type(15),
.card2:nth-of-type(20),
.card2:nth-of-type(25),
.card2:nth-of-type(30),
.card2:nth-of-type(35) {
    background-color: #f1e1a6;
}

.buttonA {
    background-color: #333;
    color: #fff;
    padding: 0 16px;
    text-decoration: none;
    border-radius: 20px;
    display: inline-block;
    margin-top: 20px;
    font-size: 2rem;
    width: 244px;
    height: 43px;
    line-height: 43px;
    margin: auto;
}

.buttonA:hover {
    background-color: #555;
}

.container3 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 40px 90px;
    width: 90%;
    margin-top: 40px;
    padding-bottom: 80px;
}

.card3 {
    display: flex;
    text-align: center;
    justify-content: center;
    align-items: center;
    height: 150px;
    font-size: 3rem;
    color: black;
    font-weight: bold;
    border-radius: 10px;
}

.card1--hover:hover,
.card2:hover,
.card3:hover {
    opacity: 0.8;
    cursor: pointer;
}

.excel {
    background-color: #88c9c5;
}

.dsa {
    background-color: #f1e1a6;
    line-height: 1.2;
}

.ml {
    background-color: #f5c2c2;
}

.ai {
    background-color: #d7d1ce;
}


/*slide 8*/

.program-b {
    font-family: Arial, sans-serif;
    background-color: #2c2f38;
    color: #fff;
    text-align: center;
    margin: 0;
}

h1.program-B {
    font-size: 6.5rem;
    font-weight: bold;
    padding-top: 20px;
    text-align: center;
    padding-bottom: 20px;
    line-height: 1.3;
}

p.program-B {
    font-size: 2rem;
    text-align: center;
}

.pro-b {
    justify-content: center;
    align-items: center;
    padding: 20px;
    margin-top: 0%;
    background-color: #2c2f38;
    text-align: center;
}

.button1.program-b {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    margin-left: 250px;
}

.buttonbe {
    background-color: #63b065;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: left;
    text-decoration: none;
    font-size: 16px;
    margin: 10px;
    cursor: pointer;
    border-radius: 5px;
    font-weight: bold;
    font-size: medium;
    width: 400px;
}

.buttonbe.backend {
    background-color: #ebcd80;
    color: #000000;
}


/*slide 9*/

.program-c {
    font-family: Arial, sans-serif;
    background-color: #2c2f38;
    color: #fff;
    text-align: center;
    margin: 0;
}

h1.program-C {
    font-size: 3.5rem;
    padding-top: 40px;
    padding-bottom: 25px
}

p.program-C {
    font-size: 1.75rem;
    padding-top: 5px;
}

.pro-c {
    padding: 20px;
    margin-top: 0%;
    background-color: #2c2f38;
    padding-bottom: 20px;
}

a.program-c {
    color: #f47da6;
    text-decoration: none;
    transition: color 0.3s ease;
}

a.program-c:hover {
    color: #12ee79;
    text-decoration: underline;
}

.button-container {
    display: flex;
    justify-content: center;
    margin: 30px 0 0;
    padding-top: 35px;
    padding-bottom: 50px;
}

.learn-more-button {
    background-color: #30a15f;
    color: #ffffff;
    border: none;
    padding: 17px 104px;
    font-size: 1.75rem;
    cursor: pointer;
    border-radius: 30px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.learn-more-button:hover {
    background-color: #059862;
}


/*slide 10*/

.program-d {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 600px;
    background-color: #d9eee1;
}

.content-wrapper.d {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 1200px;
    width: 100%;
    padding: 20px;
    flex-wrap: wrap;
}

.image.pro-d {
    /* width: 50%; */
    max-width: 50%;
}

.container.d {
    width: 50%;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: center;
    padding-right: 20px;
    text-align: center;
    /* gap: 10px; */
}

h1.d {
    font-size: 6.5rem;
    font-weight: bold;
    margin-bottom: 50px;
    line-height: 1.3;
}

p.d {
    font-size: 2rem;
    margin: 15px;
    font-weight: 600;
    line-height: 1.4;
    
}

a.button.d {
    display: inline-block;
    padding: 15px 0px;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    font-size: 1.75rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 40px;
    width: 50%;
    text-align: center;
    margin: 20px auto;
}

a.button.d:hover {
    background-color: #059862;
}


/* line-height:52px;
font-size: 20px;
background-color: var(--btn-color); */

.slide-13 {
    align-items: center;
    padding: 32px 35px;
}

.slide-13 .slide__body {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.slide-13 .slide__text {
    padding: clamp(9px, 3vw, 29.391px);
}

.slide-13 .slide__header--13 {
    font-size: 70px;
    line-height: 55px;
    padding-top: 13px;
    margin-left: 20.924px;
    margin-right: 20.924px;
}

.slide__sub--13 {
    font-size: 19px;
    line-height: 28.5px;
    margin: 42.8px 0 37.8px 0;
}

.slide__items--13 {
    padding-left: 79px;
}

.slide-14 {
    background-color: var(--slide-14-color);
}

.slide-14 .slide {
    text-align: center;
    padding: 3%;
    margin: 40px 0;
}

.slide-14 .slide__content {
    color: var(--black-color);
}

.slide-14 .slide__sub--14 {
    font-family: 'Freckle Face', cursive;
    font-size: 32px;
    font-weight: 400;
    margin-bottom: 35px;
    margin-top: 10px;
}

.slide-14 .slide__header--14 {
    font-family: 'Freckle Face', cursive;
    font-size: 48px;
    line-height: 72px;
    font-weight: 400;
    margin-top: 2px;
}

.slide13__img {
    margin: clamp(9px, 3vw, 29.391px);
    max-width: 500px;
    min-width: 282px;
}

.slide__img--class-room {
    width: 100%;
    height: auto;
    margin-top: 16px;
}

.img--slide14:hover {
    opacity: 0.6;
}

.slide__btn--play-Game {
    width: 200px;
    height: 52px;
    background-color: var(--slide-grey-color);
    background-color: #282A35;
    border-radius: 25px;
    line-height: 30px;
    padding: 11px 0;
    margin-top: 31px;
    margin-bottom: 18px;
    font-size: 20px;
}

@media screen and (max-width: 992px) {
    .slide-13 .slide__body {
        flex-wrap: wrap;
    }
}

.slide__btn--play-Game:hover {
    background-color: var(--black-color);
}

.slide-15 .slide {
    padding: 64px 20px;
}

.slide-15 .slide__header--15 {
    font-size: 65px;
    line-height: 97.5px;
    margin: 10px 0;
    color: var(--white-color);
}

.slide-15 .slide__sub--15 {
    line-height: 30px;
    padding-bottom: 20px;
    color: var(--white-color);
    font-size: 20px;
}

.slide-15 .slide__body {
    display: flex;
    justify-content: center;
    gap: 92px;
}

@media screen and (max-width: 603px) {
    .slide-15 .slide__body {
        flex-wrap: wrap;
    }
}

.slide-15 .slide__btn {
    width: 100%;
    max-width: 567.167px;
    min-width: 300px;
    height: auto;
    text-align: center;
    text-decoration: none;
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 35px;
    display: inline-block;
    margin: 0;
    margin-bottom: 18px;
}

.slide__btn--green {
    background-color: rgb(4, 170, 109);
    opacity: 0.97;
    padding: 70px 50px;
    border-radius: 5px;
}

.slide__btn--green:hover {
    background-color: var(--btn-hover-color);
}

.slide-15 a {
    line-height: 52.5px;
    text-align: center;
}

.slide__btn--beige a {
    color: #000;
}

.slide__btn--beige {
    background-color: #FFF4A3;
    opacity: 0.97;
    padding: 70px 50px;
    border-radius: 5px;
}

.slide__btn--beige:hover {
    background-color: #fff080;
}

@media screen and (min-width: 678px) {
    .slide-15 .slide__btn {
        width: 45%;
    }
}

.slide__btn--play-Game:hover {
    background-color: var(--black-color);
}

.slide__btn--green {
    background-color: rgb(4, 170, 109);
    opacity: 0.97;
    padding: 70px 50px;
    border-radius: 5px;
}

.slide__btn--green:hover {
    background-color: var(--btn-hover-color);
}


/* slide-16 */

.slide-16 {
    background-color: rgb(231, 233, 235);
}

.slide-16 .slide {
    padding: 0 24px;
}

.slide__header--16 {
    font-size: 65px;
    line-height: 97.5px;
    color: var(--black-color);
    padding-top: 66px;
}

.slide__sub--16 {
    font-size: 20px;
    line-height: 30px;
    color: var(--black-color);
    margin: 13px 0 26px 0;
}

.slide__img--16 {
    width: 100%;
}

.slide__img--16 img {
    width: 100%;
    display: block;
    margin: 0 auto;
    max-width: 980px;
    min-width: 282px;
}

.slide-16 .slide__btn--play-Game a {
    line-height: 62px;
}

.slide-16 .slide__btn--play-Game {
    width: 50vw;
    height: 62px;
    padding: 0;
    margin: 38px auto 108px auto;
}


/* slide-17 */

.slide-17 .slide {
    max-width: 1225px;
    min-width: 210px;
    margin: 0 auto;
    position: relative;
    padding: 0 60px 64px 60px;
    margin-bottom: 85px;
}

.slide-17 .slide__sub,
.slide-17 .slide__header {
    font-weight: 600;
}

.slide__header--17 {
    font-size: 62px;
    padding: 62px 0;
    line-height: 93px;
}

.slide-17 .slide__content {
    color: rgb(255, 192, 199);
    text-align: start;
}

.slide__sub.slide__sub--17 {
    line-height: 78px;
    font-size: 52px;
    margin-bottom: 52px;
}

.slide-17 .slide__btn--learn-More {
    width: 204.85px;
    height: 64px;
    margin-bottom: 16px;
    border-radius: 50px;
    margin-left: 0%;
}

.slide-17 .slide__btn--learn-More a {
    line-height: 64px;
}

.slide__circle-logo-1 {
    fill: #04aa6b;
}

.slide__circle-logo-2 {
    font-size: 23px;
}

.slide__circle-logo-2,
.slide__circle-logo-3,
.slide__circle-logo-4 {
    fill: #fff;
}

.slide__circle-logo-2,
.slide__circle-logo-3 {
    font-family: RobotoMono-Medium, Roboto Mono;
    font-weight: 500;
}

.slide__circle-logo-3 {
    font-size: 20.08px;
}

#slide__arrow,
#slide__circle-logo {
    position: absolute;
    z-index: 1;
    transform: rotate(10deg);
}

#slide__arrow {
    right: 200px;
    bottom: 13px;
    width: 220px;
    height: auto;
    display: inline-block;
    z-index: 2;
}

#slide__circle-logo {
    bottom: -62px;
    right: 25px;
    width: 220px;
    height: auto;
}

@media screen and (max-width: 992px) {
    #slide__arrow {
        right: 128px;
        bottom: -80px;
        z-index: 2;
    }
    #slide__circle-logo {
        right: 2%;
        bottom: -110px;
        width: 150px;
        z-index: 1;
    }
}

@media screen and (max-width: 800px) {
    #slide__arrow {
        display: none;
    }
}

@media screen and (max-width: 600px) {
    #slide__circle-logo {
        top: -40px;
        width: 100px;
        right: 10px;
    }
}


/* slide-18 */

.slide-18 .slide {
    padding: 0 24px 100px 24px;
}

.slide-18 .slide__header--18 {
    font-size: 60px;
    line-height: 90px;
    color: var(--black-color);
    margin-bottom: 10px;
    font-weight: 600px;
}

.slide-18 .slide__sub--18 {
    color: var(--black-color);
    font-size: 20px;
    line-height: 30px;
}

.slide-18 .slide__subb--18 {
    margin: 19px 0 10px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--black-color);
    line-height: 24px;
}

.slide-18 .slide__body {
    width: 100%;
    max-width: 932px;
    min-width: 282px;
    margin: 0 auto;
}

.slide__body-header {
    background-color: rgb(241, 241, 241);
    line-height: 22.5px;
    border-radius: 4px;
    overflow: hidden;
    padding: 10px;
}

.slide__body-header .slide__circle {
    width: 20%;
    float: left;
}

.slide-18 .slide__input {
    width: 80%;
    float: left;
}

.slide-18 .slide__body-input {
    padding: 5px;
    margin-top: -8px;
    display: inline-block;
    background-color: var(--white-color);
    color: rgb(102, 102, 102);
    border-radius: 3px;
    border-style: none;
    font-size: 14px;
    font-weight: 600;
    width: 80%;
}

.slide-18 .slide__circle {
    height: 26.5px;
}

.slide__circle-colorr,
.slide__circle-color {
    margin-top: 5px;
    height: 15px;
    width: 15px;
    background-color: #bbb;
    border-radius: 50%;
    display: inline-block;
    margin-left: 3px;
}

#slide__circle-red {
    background-color: rgb(237, 89, 74);
}

#slide__circle-yellow {
    background-color: rgb(253, 216, 0);
}

#slide__circle-blue {
    background-color: rgb(90, 192, 90);
}

.slide__body-footer {
    background-color: #e3e6e8;
    height: 400px;
    border: 5.333px solid #e3e6e8;
}

.slide-18 .slide__img {
    position: relative;
}

.slide-18 #slide__img-screen {
    width: 100%;
}

.slide-18 #slide__title,
.slide-18 #slide__page {
    position: absolute;
    padding: 8px 12px;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

.slide-18 #slide__page {
    color: var(--white-color);
    font-size: 12px;
    top: 0;
}

.slide-18 #slide__turn-Left,
.slide-18 #slide__turn-Right {
    position: absolute;
    top: 50%;
    color: rgb(242, 242, 242);
    font-size: 18px;
    transform: translateY(-30%);
    transition: 0.6s ease;
    padding: 16px;
}

.slide-18 .slide__turn:hover {
    background-color: rgba(0, 0, 0, 0.8);
    cursor: pointer;
}

.slide-18 #slide__turn-Left {
    border-radius: 0 3px 3px 0;
}

.slide-18 #slide__turn-Right {
    right: 0;
    border-radius: 3px 0 0 3px;
}

.slide-18 #slide__title {
    font-size: 15px;
    bottom: 8px;
    width: 100%;
    text-align: center;
    color: rgb(242, 242, 242);
}

.slide__circle-Turn {
    width: 100%;
    text-align: center;
}

.slide__circle-Turn .slide__circle-color:hover {
    background-color: rgb(113, 113, 113);
    transition: 0.6s ease;
}

.slide__circle-Turn #slide__circle-1 {
    background-color: rgb(113, 113, 113);
}

.slide__body-TV {
    height: 80px;
    width: 49.778px;
    background-color: var(--slide-grey-color);
    margin: 0 auto;
}

.slide-18 .slide__btn a {
    line-height: 62px;
}

.slide-18 .slide__btn--play-Game {
    width: 100%;
    max-width: 466px;
    min-width: 282px;
    padding: 0;
    margin: 0 auto;
    height: 62px;
}

.slide-18 .slide__btn--play-Game:hover {
    background-color: var(--btn-hover-color);
}


/* footer */

.footer__main {
    position: relative;
    background-image: url('../img/footer-background.webp');
    background-color: var(--slide-grey-color);
    background-repeat: no-repeat;
    background-position: right bottom, center center;
    font-size: 12px;
    width: 100%;
    font-family: Source Sans Pro, sans-serif;
    font-weight: 600;
    padding: 40px 80px 400px 80px;

    /*  */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;

}

.footer__container {
    max-width: 1200px; /* Đặt giới hạn độ rộng */
    width: 100%; /* Đảm bảo phần tử con chiếm đủ chiều rộng */
    padding: 0 20px; /* Đệm để tránh nội dung sát biên */
}

.footer__main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/background-star.png');
    background-size: cover;
    opacity: 0.4;
    pointer-events: none;
}

@media screen and (max-width: 1200px) {
    .footer {
        background-size: 500px, auto;
    }
    .footer__link-1,
    .footer__header-logo {
        padding-left: 2.6%;
        padding-right: 2.6%;
    }
    .footer__Top {
        padding-right: 8%;
    }
}

@media screen and (max-width: 992px) {
    .footer__main {
        padding: 40px 80px 400px 80px !important;
    }
    .footer__header {
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    .footer__header-logo {
        padding: 10px 20px 10px 20px !important;
    }
    .footer__link-1 {
        width: 100%;
        float: none;
        text-align: center;
        padding: 10px 20px!important;
        font-size: 20px;
        display: block;
        margin: 0 auto;
    }
    .footer_body {
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    .footer__title {
        margin: 40px 0 20px 0 !important;
    }
    .footer__Top {
        width: 100%;
        /* float:none; */
        margin: 0 auto;
        font-size: 16px;
        line-height: 20px;
        padding: 0 !important;
        align-items: center;
        flex-basis: 100%;
        text-align: center;
    }
    .footer__Top h5 {
        font-size: 26px;
        margin-top: 40px;
    }
    .footer__footer {
        text-align: center;
        padding: 0 !important;
    }
    */ .footer__delete-br {
        display: none;
    }
    .footer__main {
        padding-bottom: 400px;
    }
    .footer__icon {
        text-align: center;
    }
    .footer__break {
        margin-top: 16px !important;
        display: block !important;
    }
}

@media screen and (max-width: 992px) {
    .footer {
        background-image: url('../img/footer-background.webp'), url('../img/background-star.png');
        background-color: #282A35;
        background-repeat: no-repeat, repeat;
        background-position: center bottom, left top;
    }
}

@media screen and (max-width: 1200px) {
    .footer__main {
        background-size: 500px, auto;
    }
}

.footer__header {
    display: flex;
    overflow: hidden;
    flex-wrap: wrap;
}

.footer__header-logo {
    padding: 30px 10px 30px 40px;
}

.footer__header-logo #logo {
    font-size: 46px;
    width: 49px;
    height: 46px;
}

.footer__link-1,
.footer__header-logo {
    text-transform: uppercase;
    width: auto;
    float: left;
}

.footer__link-1 a,
.footer__header-logo a {
    text-decoration: none;
    color: #FFF4A3;
    line-height: 22.5px;
    font-size: 15px;
}

.footer__link-4:hover,
.footer__size-15:hover,
.footer__link-1 a:hover,
.footer__header-logo a:hover {
    text-decoration: underline;
    color: #FFF4A3;
    cursor: pointer;
}

.footer__link-1:hover a,
.footer__header-logo:hover a {
    text-decoration: underline;
    color: #FFF4A3;
}

.footer__link-1 {
    padding: 40px 30px;
}

.footer__break {
    margin: 0;
    display: inline;
}

.footer__body {
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
}

.footer__main .footer__title {
    font-size: 18px;
    margin: 10px 0 20px 0;
}

.footer__link-2 {
    display: block;
}

.footer__link-2:hover,
.footer__size-20:hover,
.footer__Top-4 .footer__title:hover {
    text-decoration: underline;
    color: #FFF4A3;
    text-decoration: none;
}

.footer__size-15 {
    font-size: 15px;
}

.footer__Top {
    float: left;
    width: auto;
    padding: 0 135px 0 40px;
}

.footer__Top-4 {
    padding-right: 0;
}

.footer__icon {
    display: flex;
    /* font-size: 20px; */
    padding: 20px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 16px;
    /* justify-content: center; */
}

.footer__link-3 {
    margin-right: 16px;
    display: block;
    font-size: 2rem;
    padding: 20px;
}

.footer__link-3 {
    margin-right: 10px;
}

.footer__a {
    color: rgb(221, 221, 221);
    text-decoration: none;
}

.footer__footer {
    padding-left: 40px;
}

.footer__link-4 {
    color: rgb(221, 221, 221);
}

.footer__box-icon-1 {
    display: flex;
}

.footer__box-icon-2 {
    display: flex;
    flex-wrap: wrap;
}

.split {
    margin-bottom: -8px;
}

/*  */

.dark-mode {
    background-color: #1d2a35 !important;
    color: white !important;
}

.dark-mode__search {
    color: black;
    font-weight: 400;
}

.dark-mode--hover:hover {
    background-color: #38444d !important;
    /* color: #000; */
}

.darkMode-span {
    color: white !important;
}

.darkMode-content {
    background-color: #37454e !important;
    color: white !important;
}

.darkMode--green {
    color: #98c2a4 !important;
}

.dark-mode__slide16{
    background-color: #37454e;
    color: white !important;
}