#frm-cap-nhat-thong-tin .invalid {
    flex-wrap: wrap;
}

.katex-display {
    display: inline-block;
    margin: 0;
}

.question__description input, .question__description select {
    display: inline-block;
    margin: 0.2em;
    border: 1px solid #ccc;
    width: 56px;
    height: 36px;
    padding: 0 8px;
}

.question-success {
    display: block;
}


.overlay {
    display: none;
    position: fixed;
    z-index: 5555;
    top: 0;
    left: 0;
    height: 100%;
    opacity: .6;
    width: 100%;
    background: #000;
}

    .overlay.show {
        display: flex;
        justify-content: center;
    }

    .overlay .loading-text {
        position: absolute;
        top: 50%;
        /*left: 50%;*/
        margin-top: -50px;
        /*margin-left: -50px;*/
        font-size: 27px;
        color: #fff;
        max-width: 100px;
    }

        .overlay .loading-text img {
            width: 100%;
            height: auto;
        }


.question.active {
    display: block !important;
}

.page-item:first-child .page-link {
    border-radius: 50%;
}

.page-item:last-child .page-link {
    border-radius: 50%;
}

.pagination {
    gap: 10px;
}

.page-item.active .page-link {
    background-color: #34b87e;
}

#cup .achievements-content__list .item-left div {
    margin-left: 14px;
    padding-top: 3px;
}

#cup .achievements-content__list .item-left span {
    margin-left: 0px;
}

#giay-khen .achievements-content__list .item-left div {
    margin-left: 14px;
    padding-top: 3px;
}

/*#giay-khen .achievements-content__list .item-left span {
    margin-left: 0px;
}
*/


.hidden {
    display: none !important;
}

.question-up-down .item-head button.btn-up:hover {
    background: #34b87f;
    color: #fff;
}

.question-up-down .item-head button.btn-down:hover {
    background: #e12536;
    color: #fff;
}

.keo_tha .item-inner {
    padding-left: 0;
}

/*.hidden-truong {
    display: block;
}*/

.hidden-truong.checked {
    display: none;
}


.modal-add-parents .item-select input {
    flex-grow: 1;
    border: 1px solid #34b87f;
    border-radius: 22px 0 0 22px;
    height: 44px;
    padding: 0 35px 0 15px;
    background-image: url(data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath d='M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z' fill='%23999999'/%3E%3C/svg%3E);
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 11px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}



.res-phu-huynh {
    display: none;
}

    .res-phu-huynh p {
        background: #cfcfcf;
        padding: 5px;
        margin: 5px;
    }

    .res-phu-huynh i {
        float: right;
        color: green;
    }


.add-phu-huynh {
    display: block;
    cursor: pointer;
}

.res-hoc-sinh {
    display: none;
}

    .res-hoc-sinh p {
        background: #cfcfcf;
        padding: 5px;
        margin: 5px;
    }

    .res-hoc-sinh i {
        float: right;
        color: green;
    }

.add-hoc-sinh {
    display: block;
    cursor: pointer;
}




.sticky-box {
    position: fixed;
    top: 146px;
    z-index: 9999;
}

    .sticky-box.show {
        z-index: 99999;
        top: 10px;
    }

.reviews-table__content .item-col {
    border: 1px solid #dcdcdc
}



.reviews-group-chart__list .content {
    display: none;
}

    .reviews-group-chart__list .content.checked {
        display: block;
        border-width: 1px;
        border-radius: 10px;
    }

.fieldsLinker img {
    max-height: 180px;
    max-width: 180px;
    display: inline-block !important
}

.question {
    display: block;
}

.common-form .item-content input.input__more-data {
    width: calc(60% - 44px)
}




.frac {
    position: relative;
    display: inline-block;
    text-align: center;
    letter-spacing: .001em;
    vertical-align: middle
}

    .frac > span {
        display: block;
        padding: .1em
    }

        .frac > span:last-of-type {
            border-top: thin solid #000
        }

.frac-input input {
    border: 1px solid #d6d6d6;
    border-radius: 3px;
    width: 75px;
    height: 25px;
    padding: 5px 10px;
    background: #fff;
    text-align: center;
    color: #666
}

.frac-input > span {
    padding: .35em 0
}

    .frac-input > span:last-of-type {
        border-color: #d9d9d9
    }

.close-block {
    position: absolute;
    top: 0;
    right: -15px;
    border: none;
    width: 10px;
    height: 10px;
    padding: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10' fill='none'%3E %3Cpath d='M8.00001 2.00001L1.99999 8.00003M8.00001 8.00003L1.99999 2.00001' stroke='%23FF4A4A' stroke-width='2' stroke-linecap='square' stroke-linejoin='round'/%3E %3C/svg%3E")
}

.number-options {
    position: relative;
    display: inline-block;
    margin: 0;
    border: 1px solid #cfcfcf;
    border-radius: 5px;
    min-width: 110px;
    min-height: 36px;
    padding: 5px 35px 5px 12px;
    background-color: #fff;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6' fill='none'%3E %3Cpath d='M0.178483 1.126L4.44436 5.76188C4.51312 5.83657 4.59841 5.89652 4.69439 5.93762C4.79037 5.97872 4.89476 6 5.0004 6C5.10604 6 5.21043 5.97872 5.30641 5.93762C5.40239 5.89652 5.48769 5.83657 5.55645 5.76188L9.82232 1.126C10.2294 0.683502 9.8919 0 9.26627 0H0.733309C0.10768 0 -0.229854 0.683502 0.178483 1.126Z' fill='%23A6A6A6'/%3E %3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 11px center;
    background-size: 10px 6px;
    cursor: pointer;
    vertical-align: middle
}

    .number-options::before {
        content: attr(data-value);
        color: #888
    }

    .number-options > span {
        position: absolute;
        z-index: 5;
        top: 100%;
        right: -1px;
        left: -1px;
        opacity: 0;
        visibility: hidden;
        border: 1px solid #cfcfcf;
        border-radius: 0 0 5px 5px;
        background-color: #fff;
        pointer-events: none
    }

        .number-options > span span {
            align-items: center;
            display: flex;
            border-bottom: 1px solid #e7e7e7;
            min-height: 45px;
            padding: 5px 12px;
            cursor: pointer
        }

            .number-options > span span:last-of-type {
                border-bottom: none
            }

            .number-options > span span:hover {
                border-color: #d8e9fd;
                background-color: #d8e9fd
            }

    .number-options.active {
        border-radius: 5px 5px 0 0
    }

        .number-options.active > span {
            opacity: 1;
            visibility: visible;
            pointer-events: all;
        }

    .number-options .close-block {
        top: -9px;
        right: -13px
    }

.division {
    position: relative;
    display: inline-flex;
    vertical-align: middle
}

    .division > span {
        display: block
    }

        .division > span > span {
            display: block;
            padding: 9px 7px
        }

        .division > span:first-of-type {
            border-right: 1px solid #d9d9d9
        }

            .division > span:first-of-type span {
                padding-left: 0 !important
            }

        .division > span:last-of-type span {
            padding-right: 0 !important
        }

            .division > span:last-of-type span:last-of-type {
                border-top: 1px solid #d9d9d9
            }

    .division input {
        border: 1px solid #d9d9d9;
        border-radius: 3px;
        width: 72px;
        height: 32px;
        padding: 5px 10px;
        background: #fff;
        text-align: center
    }

.input-number {
    position: relative;
    display: inline-block;
    width: 100px;
    height: 36px;
    margin: 0 0;
    vertical-align: middle
}

    .input-number input {
        border: 1px solid #cfcfcf;
        border-radius: 5px;
        border-radius: 5px;
        width: 100%;
        height: 100%;
        padding: 0 10px;
        background: #fff;
        text-align: center
    }

@media screen and (min-width:768px) {
    .input-number--large {
        width: 200px;
        height: 45px
    }
}

.input-number--large input {
    border-color: #ccced1;
    text-align: left
}

@media screen and (min-width:768px) {
    .input-number--large input {
        padding-right: 20px;
        padding-left: 20px
    }
}


.t-control {
    text-align: center;
    display: inline-flex;
    margin: 4px 8px;
    vertical-align: middle;
    padding: 4px;
    border-radius: 4px;
    min-width: 28px;
}

    .t-control.ck-widget {
        cursor: move;
        padding: 4px;
        border-radius: 4px;
    }

        .t-control.ck-widget input {
            pointer-events: none;
        }

        .t-control.ck-widget > .input-number,
        .t-control.ck-widget > .number-options,
        .t-control.ck-widget > input {
            margin: 0;
            pointer-events: none;
        }

    .t-control > .number-options > span > span > span {
        border: none;
    }

    .t-control > .input-number {
        padding: 0;
        height: auto;
    }

        .t-control > .input-number input {
            height: 32px;
            margin: 0;
        }


.menu-open {
    display: block;
    opacity: 1;
}

.division > span > span {
    height: 50%;
    min-width: 40px;
}

.division > span:last-of-type span:last-of-type {
    border-top: none;
}

.division > span:nth-child(2) > span:first-child {
    border-bottom: 1px solid #d9d9d9;
}

.frac input {
    height: 32px;
}

:root {
    --t-control-bg-color-0: #362FD9;
    --t-control-bg-color-1: #FFDCA9;
    --t-control-bg-color-2: #CE7777;
    --t-control-bg-color-3: #68B984;
    --t-control-bg-color-4: #009EFF;
    --t-control-bg-color-5: #5F8D4E;
    --t-control-bg-color-6: #BA94D1;
    --t-control-bg-color-7: #497174;
    --t-control-bg-color-8: #0E5E6F;
    --t-control-bg-color-9: #3E6D9C;
    --t-control-bg-color-10: #4E6C50;
}

.t-control-bg-color_0 {
    border: 3px solid var(--t-control-bg-color-0);
}

.t-control-bg-color_1 {
    border: 3px solid var(--t-control-bg-color-1);
}

.t-control-bg-color_2 {
    border: 3px solid var(--t-control-bg-color-2);
}

.t-control-bg-color_3 {
    border: 3px solid var(--t-control-bg-color-3);
}

.t-control-bg-color_4 {
    border: 3px solid var(--t-control-bg-color-4);
}

.t-control-bg-color_5 {
    border: 3px solid var(--t-control-bg-color-5);
}

.t-control-bg-color_6 {
    border: 3px solid var(--t-control-bg-color-6);
}

.t-control-bg-color_7 {
    border: 3px solid var(--t-control-bg-color-7);
}

.t-control-bg-color_8 {
    border: 3px solid var(--t-control-bg-color-8);
}

.t-control-bg-color_9 {
    border: 3px solid var(--t-control-bg-color-9);
}

.t-control-bg-color_10 {
    border: 3px solid var(--t-control-bg-color-10);
}


span:not(.math-tex):has(.katex) {
    margin: 0 4px;
}

.news-nav__wrapper {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

    .news-nav__wrapper::-webkit-scrollbar {
        display: none;
    }





.slick-slide_1 {
    display: block;
    height: 100%;
    min-height: 1px;
}


.news-carousel__block-inner .slick-arrow {
    top: 5px;
}



.user-detail__form-list .block.checked {
    display: none;
}

.katex .text {
    font-family: KaTeX_Math;
    font-style: italic;
}

select:disabled, input:disabled {
    background-color: #eee !important;
}

.olt p {
    display: inline-block;
}

.login__form .password .view-password {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    justify-content: center;
    align-items: center;
    display: flex;
    margin: 0;
    border: none;
    width: 44px;
    padding: 0;
    background: 0 0;
    color: #999;
}

.t-control.input-number {
    width: auto;
    height: auto;
}

.disabled {
    background-color: #d9d9d9 !important;
    color: linen;
    opacity: 0.8;
    cursor: not-allowed;
    pointer-events: all !important;
}

.bg-blue {
    background-color: #2196f3
}

.couponcode {
    cursor: pointer;
}

    .couponcode:hover .coupontooltip {
        display: block;
    }

.coupontooltip {
    position: absolute;
    white-space: nowrap;
    display: none;
    background: #fff;
    color: black;
    padding: 5px;
    z-index: 9999;
    bottom: 20px;
    text-align: left;
    border: 1px solid green
}

.achievements-content__list .item-inner {
    border: 1px solid #ffb400
}

.achievements-content__list .item::after {
    background-color: none;
}

#paginationUL .page-item.disabled {
    background-color: transparent !important;
}

.user-detail-alert {
    margin-top: 30px
}

.bold {
    font-weight: bold;
}

#quyenloi-content .benefit__list {
    display: none;
}

    #quyenloi-content .benefit__list.active {
        display: block;
    }



.link-none {
    text-decoration: none !important;
    cursor: pointer !important;
}

#html_bo_sach .fly-box .x-close {
    display: none;
}

.navbar-brand__logo {
    background-image: url(/content/images/logo-tutai-170.png);
    height: 70px;
    width: 148px;
    background-repeat: no-repeat;
    background-position-y: center;
}

    .navbar-brand__logo span, .navbar-brand__logo svg {
        display: none
    }

.site-heading--lg {
    margin-top: 10px;
    margin-bottom: 15px;
}

@media screen and (min-width:768px) {
    .questions__inner {
        padding: 15px 15px 25px 50px;
    }
}

.site-heading__title {
    margin-bottom: 10px;
    font-size: 20px;
}

.question__title {
    font-size: 20px;
}

.question__content {
    margin-bottom: 20px;
}

.question__description {
    margin-bottom: 20px;
    font-size: 17px;
}

.question-checkbox {
    margin-bottom: 15px;
}

.question-checkbox__content {
    padding: 8px 14px
}

@media screen and (min-width:1400px) {
    .question-checkbox__content {
        padding: 12px 14px
    }
}

.question:not(:last-child) {
    margin-bottom: 20px;
    padding-bottom: 11px;
}

.site-header__top {
    padding: 0px 0 5px;
}

.site-select {
    padding: 15px 0;
}

.site-heading--lg {
    margin-top: 24px;
    margin-bottom: 20px;
}

.question:not(:last-child) {
    margin-bottom: 12px;
    padding-bottom: 11px;
}

.site-heading {
    margin-bottom: 20px;
    border-radius: 20px;
    padding: 10px 21px;
}

.questions__inner-2 {
    padding: 20px 20px 30px 30px
}

.question-answer__content {
    padding: 15px 20px 5px 54px;
}

.point {
    position: relative;
}

    .point .pn_CUP_DONG, .point .pn_CUP_BAC, .point .pn_CUP_VANG {
        position: absolute;
        bottom: -45px !important;
        border: 1px dashed gold;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        display: flex;
        justify-content: center;
    }

        .point .pn_CUP_DONG i, .point .pn_CUP_BAC i, .point .pn_CUP_VANG i {
            margin: auto;
        }

    .point .pn_CUP_DONG {
        border: 1px dashed #9f703c;
    }

    .point .pn_CUP_BAC {
        border: 1px dashed #989898;
    }

@media screen and (min-width: 768px) {
    .site-heading--lg {
        padding: 20px 20px 40px;
    }
}


#tutai_key_pad {
    /*background: #34b86a linear-gradient(180deg,#34b87f,#34b87f) repeat-x scroll 0 0/100% auto;*/
    border-radius: 4px;
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 25px;
    padding: 5px;
    width: 100%;
    justify-content: space-around;
    /*background-color: #8b4646;*/
}

.keypad {
    box-shadow: 0 1px 2px rgba(0,0,0,.5);
    font-size: 22px;
    margin: 3px;
    color: #fff;
    flex-basis: 9%;
    height: 46px;
    width: 46px;
}

    .keypad:hover {
        color: #34b86a;
        background-color: #fff;
        box-shadow: 0 1px 2px rgba(255,255,255,.5);
    }



    .keypad:nth-child(1),
    .keypad:nth-child(2),
    .keypad:nth-child(3),
    .keypad:nth-child(4),
    .keypad:nth-child(5),
    .keypad:nth-child(6),
    .keypad:nth-child(7),
    .keypad:nth-child(8),
    .keypad:nth-child(9),
    .keypad:nth-child(10),
    .keypad:nth-child(11),
    .keypad:nth-child(12) {
        background: #0da4e9;
        color: #fff;
    }

    .keypad:nth-child(11),
    .keypad:nth-child(12),
    .keypad:nth-child(13),
    .keypad:nth-child(14) {
        background: #34b87f;
        color: #fff
    }

    .keypad:nth-child(15),
    .keypad:nth-child(16),
    .keypad:nth-child(17),
    .keypad:nth-child(18),
    .keypad:nth-child(19) {
        background: #EF4335;
        color: #fff;
    }

#dap-an-sai .question-answer__content {
    font-size: 16px;
}


.question .question__button {
    color: white;
    cursor: pointer;
    background-color: #34b87f;
    box-shadow: 0 5px 0 #0C864F;
}

    .question .question__button:active {
        box-shadow: none;
        transform: translateY(8px);
    }

.question__button.question__button--red:active {
    box-shadow: none;
    transform: translateY(8px);
}





/* Timeline Container */
.timeline {
    width: 100%;
}

    /* Outer Layer with the timeline border */
    .timeline .outer {
        border-left: 2px solid #333;
    }

    /* Card container */
    .timeline .card {
        position: relative;
        margin: 0 0 20px 20px;
        padding: 10px;
        color: gray;
        border-radius: 8px;
        background: linear-gradient(to bottom,#f2fff9,#fff);
    }

        /* Information about the timeline */
        .timeline .card .info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        /* Title of the card */
        .timeline .card .title {
            color: orangered;
            position: relative;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
        }

            /* Timeline dot  */
            .timeline .card .title::before {
                content: "";
                position: absolute;
                width: 20px;
                height: 20px;
                background: white;
                border-radius: 999px;
                left: -42px;
                border: 3px solid #34b87f;
            }

    .timeline .history-result__content {
        padding: 10px;
        background: linear-gradient(to bottom,#f2fff9,#fff);
        display: flex;
        justify-content: flex-start;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        flex-direction: column;
    }

        .timeline .history-result__content .history-result__block {
            overflow: hidden;
            border: 1px solid #dcdcdc;
            border-radius: 10px;
            background-color: #fff;
            /*flex-basis:32%;*/
            width: 100%;
        }

.history-result__content .history-result__block-title {
    align-items: center;
    display: flex;
    border-bottom: 1px solid #dcdcdc;
    padding: 9px 9px;
    background-color: #f4f4f4;
    gap: 4px;
}

.history-result__content .history-result__block-content {
    padding: 10px;
}

.block-content__item ~ .block-content__item {
    margin-top: 12px;
}

.history-result__block-title .badge {
    padding: 4px 8px;
}

.nav-link svg {
    margin-right: 9px;
}

.mrel {
    font-size: 22px
}

.talk__content {
    max-width: 75%;
}

.olt {
    padding: 7px 0;
    display: block
}

.question__description b {
    margin: 0 4px
}

.question__content {
    user-select: none
}

.question-checkbox__content:hover {
    cursor: pointer;
    box-shadow: 0 0.3rem 0rem 0 rgb(12 134 79 / 60%);
    transform: translateY(-0.05rem);
    transition: transform 150ms;
}

.question__button:hover {
    cursor: pointer;
    box-shadow: 0 0.3rem 0rem 0 rgb(12 134 79 / 60%);
    transform: translateY(-0.2rem);
    transition: transform 500ms;
}

.btn-speak:hover {
    cursor: pointer;
    transform: translate3d(-1px, -2px, -0px) scale(1.2);
    transition: transform 150ms;
}

.ico-gem:hover, .ico-gem-lg:hover, .ico-cup-dong:hover, .ico-cup-bac:hover, .ico-cup-vang:hover {
    cursor: pointer;
    transform: scale(1.3) rotate(360deg);
    transition: transform 300ms
}

.zoom::before {
    transform: scale(1.1);
    color: red
}


.horizTranslate {
    -webkit-transition: 1s;
    -moz-transition: 1s;
    -ms-transition: 1s;
    -o-transition: 1s;
    transition: 1s;
}

.zoom-in-zoom-out {
    width: 50px;
    height: 50px;
    animation: zoom-in-zoom-out 1s ease-out;
}

@keyframes zoom-in-zoom-out {
    0% {
        transform: scale(1, 1);
    }

    50% {
        transform: scale(1.5, 1.5);
    }

    100% {
        transform: scale(1, 1);
    }
}

.progress {
    transition: width 1s linear 0s;
}

.blink_me {
    animation: blinker 2s linear 10;
}

@keyframes blinker {
    50% {
        opacity: 0;
    }
}

.question-wrong {
    margin-bottom: 15px
}

.question-answer__content .question__title {
    display: none
}

.layout__join-class {
    width: 100%;
}


/*Làm bài tập upload file*/

:root {
    --clr-white: rgb(255, 255, 255);
    --clr-black: rgb(0, 0, 0);
    --clr-light: rgb(245, 248, 255);
    --clr-light-gray: rgb(196, 195, 196);
    --clr-blue: rgb(63, 134, 255);
    --clr-light-blue: rgb(171, 202, 255);
}

.upload-area {
    width: 100%;
    /*    max-width: 25rem;*/
    background-color: var(--clr-white);
    box-shadow: 0 10px -4px rgb(218, 229, 255);
    border: 2px solid var(--clr-light-blue);
    border-radius: 24px;
    padding: 2rem 1.875rem 1rem 1.875rem;
    /*    margin: 0.625rem;*/
    text-align: center;
}

.upload-area--open { /* Slid Down Animation */
    animation: slidDown 500ms ease-in-out;
}

@keyframes slidDown {
    from {
        height: 28.125rem; /* 450px */
    }

    to {
        height: 35rem; /* 560px */
    }
}

/* Header */
.upload-area__header {
}

.upload-area__title {
    font-size: 1.8rem;
    font-weight: 500;
    margin-bottom: 0.3125rem;
}

.upload-area__paragraph {
    font-size: 0.9375rem;
    color: var(--clr-light-gray);
    margin-top: 0;
}

.upload-area__tooltip {
    position: relative;
    color: var(--clr-light-blue);
    cursor: pointer;
    transition: color 300ms ease-in-out;
}

    .upload-area__tooltip:hover {
        color: var(--clr-blue);
    }

.upload-area__tooltip-data {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -125%);
    min-width: max-content;
    background-color: var(--clr-white);
    color: var(--clr-blue);
    border: 1px solid var(--clr-light-blue);
    padding: 0.625rem 1.25rem;
    font-weight: 500;
    opacity: 0;
    visibility: hidden;
    transition: none 300ms ease-in-out;
    transition-property: opacity, visibility;
}

.upload-area__tooltip:hover .upload-area__tooltip-data {
    opacity: 1;
    visibility: visible;
}

/* Drop Zoon */
.upload-area__drop-zoon {
    position: relative;
    height: 11.25rem; /* 180px */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    border: 2px dashed var(--clr-light-blue);
    border-radius: 15px;
    margin-top: 1.1875rem;
    cursor: pointer;
    transition: border-color 300ms ease-in-out;
}

    .upload-area__drop-zoon:hover {
        border-color: var(--clr-blue);
    }

.drop-zoon__icon {
    display: flex;
    font-size: 3.75rem;
    color: var(--clr-blue);
    transition: opacity 300ms ease-in-out;
}

.drop-zoon__paragraph {
    font-size: 0.9375rem;
    color: var(--clr-light-gray);
    margin: 0;
    margin-top: 0.625rem;
    transition: opacity 300ms ease-in-out;
}

.drop-zoon:hover .drop-zoon__icon,
.drop-zoon:hover .drop-zoon__paragraph {
    opacity: 0.7;
}

.drop-zoon__loading-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    color: var(--clr-light-blue);
    z-index: 10;
}

.drop-zoon__preview-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 0.3125rem;
    border-radius: 10px;
    display: none;
    z-index: 1000;
    transition: opacity 300ms ease-in-out;
}

.drop-zoon:hover .drop-zoon__preview-image {
    opacity: 0.8;
}

.drop-zoon__file-input {
    display: none;
}

/* (drop-zoon--over) Modifier Class */
.drop-zoon--over {
    border-color: var(--clr-blue);
}

    .drop-zoon--over .drop-zoon__icon,
    .drop-zoon--over .drop-zoon__paragraph {
        opacity: 0.7;
    }

/* (drop-zoon--over) Modifier Class */
.drop-zoon--Uploaded {
}

    .drop-zoon--Uploaded .drop-zoon__icon,
    .drop-zoon--Uploaded .drop-zoon__paragraph {
        display: none;
    }

    .drop-zoon--Uploaded .drop-zoon__preview-image {
        display: block;
    }
/* File Details Area */
.upload-area__file-details {
    height: 0;
    visibility: hidden;
    opacity: 0;
    text-align: left;
    transition: none 500ms ease-in-out;
    transition-property: opacity, visibility;
    transition-delay: 500ms;
    margin-top: 1rem;
}

/* (duploaded-file--open) Modifier Class */
.file-details--open {
    height: auto;
    visibility: visible;
    opacity: 1;
}

.file-details__title {
    font-size: 1.125rem;
    font-weight: 500;
    /*    color: var(--clr-light-gray);*/
}

/* Uploaded File */
.uploaded-file {
    display: flex;
    align-items: center;
    padding: 0.625rem 0;
    visibility: hidden;
    opacity: 0;
    transition: none 500ms ease-in-out;
    transition-property: visibility, opacity;
}

/* (duploaded-file--open) Modifier Class */
.uploaded-file--open {
    visibility: visible;
    opacity: 1;
}

.uploaded-file__icon-container {
    position: relative;
    margin-right: 0.3125rem;
}

.uploaded-file__icon {
    font-size: 3.4375rem;
    color: var(--clr-blue);
}

.uploaded-file__icon-text {
    position: absolute;
    top: 1.5625rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--clr-white);
}

.uploaded-file__info {
    position: relative;
    top: -0.3125rem;
    width: 100%;
    display: flex;
    justify-content: space-between;
}

    .uploaded-file__info::before,
    .uploaded-file__info::after {
        content: '';
        position: absolute;
        bottom: -0.9375rem;
        width: 0;
        height: 0.5rem;
        background-color: #ebf2ff;
        border-radius: 0.625rem;
    }

    .uploaded-file__info::before {
        width: 100%;
    }

    .uploaded-file__info::after {
        width: 100%;
        background-color: var(--clr-blue);
    }

/* Progress Animation */
.uploaded-file__info--active::after {
    animation: progressMove 800ms ease-in-out;
    animation-delay: 300ms;
}

@keyframes progressMove {
    from {
        width: 0%;
        background-color: transparent;
    }

    to {
        width: 100%;
        background-color: var(--clr-blue);
    }
}

.uploaded-file__name {
    width: 100%;
    max-width: calc(100% - 40px);
    display: inline-block;
    font-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.uploaded-file__counter {
    font-size: 1rem;
    color: var(--clr-light-gray);
}

.questions .question__answer > textarea {
    border-radius: 12px;
    width: 100%;
    padding: 12px;
}
/*End làm bài tập upload file*/


.user-detail-join__inner .item-input-submit .btn.btn-valid {
    box-shadow: 0 4px 0 #0c8651;
    border-color: #34b87f;
    background-color: #34b87f;
}

@media screen and (min-width:768px) {
    .user-detail-join__inner .item-input-submit .btn.btn-valid {
        box-shadow: none;
    }
}

.site-heading__button {
    font-size: 16px;
}

#khoi_lop .btn-out {
    padding: 6px 12px;
    border-radius: 16px;
    background-color: #B4B4B3;
    margin: 8px 0;
}

    #khoi_lop .btn-out > svg {
        margin-right: 8px;
    }