body {
    background: #F0F0F0;
    padding-bottom: 150px;
    --color-process: linear-gradient(to right, #f9d423 0%, #f9ab1b 51%, #f85b09 100%);
}

.main-container {
    background: unset;
}

.body-container {
    min-height: unset;
}

.theory-body {
    padding: 30px 15px 0px;
    overflow: hidden;
}

    .theory-body > .body-cover {
        max-width: 1140px;
        margin: auto;
    }

.theory-process {
    display: flex;
}

    .theory-process .button-exit {
        display: inline-block;
        margin: auto auto auto 0px;
        text-decoration: none;
        outline: 0px;
        border: 0px;
        width: 19px;
        height: 19px;
        background: url('../imgs/icon-bg-reading.svg') 0px 0px;
        cursor: pointer;
    }

    .theory-process .button-tooltip {
        display: inline-block;
        margin: auto 0px auto auto;
        text-decoration: none;
        outline: 0px;
        border: 0px;
        width: 20px;
        height: 20px;
        background: url('../imgs/icon-bg-reading.svg') 0px -480px;
        cursor: pointer;
    }

    .theory-process .process-cover {
        display: inline-block;
        width: 100%;
        height: 6px;
        background: #CFCFCF;
        margin: auto 0px;
        position: relative;
    }

    /*.theory-process .process-cover::after{
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: inherit;
    position: absolute;
    right: 0px;
    top: 50%;
    transform: translate(0px, -50%);
}*/

    .theory-process .theory-process-bar {
        display: inline-block;
        width: 0%;
        height: 6px;
        position: absolute;
        left: 0px;
        top: 50%;
        transform: translate(0px, -50%);
        transition: 0.5s all ease-out;
        background: var(--color-process);
        z-index: 1;
    }

.theory-bottom {
    width: 100%;
    height: 150px;
    background: #fff;
    padding: 0px 15px;
    position: fixed;
    z-index: 1000;
    bottom: 0px;
    left: 0px;
    right: 0px;
}

    .theory-bottom .bottom-cover {
        max-width: 1140px;
        display: flex;
        height: 100%;
        margin: auto;
    }

    .theory-bottom .button {
        display: inline-block;
        width: 150px;
        height: 50px;
        text-decoration: none;
        text-align: center;
        border-radius: 30px;
        line-height: 48px;
        outline: 0px;
        border: 0px;
        font-family: opensanssemibold;
        font-size: 14px;
        margin: auto;
        border: 1px solid #CFCFCF;
        background: transparent;
        color: var(--color-default-text);
        transition: all 0.2s linear;
    }

        .theory-bottom .button.button-prev {
            margin-left: 0px;
        }

        .theory-bottom .button.button-next {
/*            background: var(--color-default-bg);*/
            background: #F39C12;
            margin-right: 0px;
            color: #fff;
        }

.theory-show-question {
    animation-name: D;
    animation-duration: .4s;
    animation-fill-mode: forwards;
    animation-timing-function: ease-out;
    position: relative;
}

.theory-hide-question {
    animation-name: E;
    animation-duration: .4s;
    animation-fill-mode: forwards;
    animation-timing-function: ease-out
}

.theory-show-question.prev {
    animation-name: DD;
    animation-duration: .4s;
    animation-fill-mode: forwards;
    animation-timing-function: ease-out;
    position: relative;
}

.theory-hide-question.prev {
    animation-name: EE;
    animation-duration: .4s;
    animation-fill-mode: forwards;
    animation-timing-function: ease-out
}

.theory-data-list {
    padding: 0px;
    margin-top: 30px;
    position: relative;
}

.theory-data-item {
    position: absolute;
    top: 0px;
    left: 0px;
    right: 0px;
    display: none;
    width: 100%;
    max-width: 1140px;
    max-height: calc(100vh - 30px - 70px - 50px - 150px);
    overflow-y: hidden;
    overflow-x: hidden;
    z-index: 2;
    padding: 5px 0px;
}

    .theory-data-item.item-current {
        position: relative;
        display: block;
        z-index: 1;
    }

    .theory-data-item .data-img-cover {
        text-align: center;
        margin-bottom: 25px;
        position: relative;
        width: 100%;
        max-width: 225px;
        display: inline-block;
    }

        .theory-data-item .data-img-cover img {
            width: 100%;
            border: 5px solid #fff;
            box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, .2);
            max-height: 225px;
        }

.theory-data-content {
    max-width: 625px;
    margin: auto;
    height: calc(100vh - 30px - 70px - 50px - 150px);
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 10px;
}

    .theory-data-content .data-title {
        font-family: opensanslight;
        font-size: 25px;
        color: var(--color-default-text);
        line-height: 30px;
        margin-bottom: 10px;
    }

    .theory-data-content .data-detail {
        font-family: opensanslight;
        font-size: 15px;
        color: #231F20;
        line-height: 24px;
        margin-bottom: 10px;
        position: relative;
    }

        .theory-data-content .data-detail:hover {
            cursor: pointer;
        }

.data-detail-sub {
    font-family: opensansitalic;
}

.theory-data-content .tooltip.bottom {
    padding: 5px 0;
    margin-top: 3px;
    width: 100%;
    left: 0 !important;
}

.theory-data-content .tooltip-inner {
    max-width: 625px !important;
    margin: auto;
    padding: 20px !important;
    font-size: 14px;
    text-align: left;
    font-family: opensanslight;
    border-radius: 10px;
}

    .theory-data-content .tooltip-inner .data-note {
        color: #fff;
    }

        .theory-data-content .tooltip-inner .data-note::before {
            border-color: #fff
        }

.theory-data-content .tooltip.bottom .tooltip-arrow {
    left: 60px !important;
}

.theory-data-content .data-line {
    width: 100%;
    height: 1px;
    background: #E5E5E5;
    margin-bottom: 10px;
}

.tooltip-title {
    font-size: 13px;
    font-family: opensanssemibold;
}

.tooltip-content {
    font-size: 14px;
    margin-top: 5px;
    display: block;
}

.theory-data-content .data-example {
    font-family: opensansregular;
    font-size: 13px;
    color: var(--color-default-text);
    margin-bottom: 15px;
}

.theory-data-content .icon-sound {
    display: inline-block;
    width: 25px;
    height: 25px;
    background: url('../imgs/icon-bg-reading.svg') 0px -450px;
    outline: 0px;
    text-decoration: none;
    vertical-align: middle;
    border-radius: 50%;
    margin: 0px 5px;
}

    .theory-data-content .icon-sound.sound-active {
        animation: animateSound 1.5s infinite linear;
    }

.theory-data-content .data-sentence-en {
    font-family: opensansregular;
    font-size: 15px;
    color: #00B8F1;
    margin-bottom: 10px;
}

.theory-data-content .data-sentence-vi {
    font-family: opensanslight;
    font-size: 15px;
    color: #777777;
    margin-bottom: 10px;
}

.theory-data-content .data-form {
    font-family: opensanssemibold;
    font-size: 15px;
    color: #231F20;
    margin-bottom: 15px;
}

.data-note {
    font-family: opensanslight;
    font-size: 14px;
    color: #474747;
    margin-bottom: 10px;
    padding-left: 15px;
    position: relative;
    display: block;
    margin-top: 10px;
}

    .data-note::before {
        content: "";
        display: inline-block;
        width: 5px;
        height: 5px;
        border-radius: 50%;
        border: 1px solid #474747;
        position: absolute;
        left: 0px;
        top: 8px;
    }

.theory-data-content .data-button-more {
    display: inline-block;
    min-width: 90px;
    padding: 0px 10px;
    height: 35px;
    border: 1px solid #E5E5E5;
    line-height: 33px;
    border-radius: 2px;
    font-family: opensanssemibold;
    font-size: 13px;
    color: #BBBBBC;
    outline: 0px;
    text-decoration: none;
    text-align: center;
    margin-top: 10px;
    transition: 0.2s all ease;
    margin-bottom: 10px;
}

    .theory-data-content .data-button-more:hover {
        color: #00BCEF;
    }

.theory-data-content strong {
    font-family: opensanssemibold;
    font-weight: normal;
}

.theory-data-content .sub-usage-content {
    font-family: opensansitalic;
}

.theory-data-img {
    position: relative;
    text-align: center;
}

.theory-data-item .data-flag {
    display: inline-block;
    font-family: opensanssemibold;
    font-size: 11px;
    line-height: 14px;
    color: #fff;
    width: 38px;
    text-align: center;
    position: absolute;
    padding: 15px 0px 20px;
    background: #7AC60C;
    top: 0px;
    left: -65px;
    cursor: default;
}

.theory-data-item[typeData='6'] .data-flag {
    background: #7AC60C;
}

.theory-data-item[typeData='2'] .data-flag {
    background: #F6BD00;
}

.theory-data-item[typeData='3'] .data-flag {
    background: #F43442;
}

.theory-data-item[typeData='4'] .data-flag {
    background: #00B8F1;
}

.theory-data-item[typeData='5'] .data-flag {
    background: #FF7900;
}

.theory-data-item .data-flag::before {
    content: "";
    display: inline-block;
    width: 100%;
    height: 7px;
    background: #3C2415;
    position: absolute;
    top: 0px;
    left: 0px;
    opacity: 0.1;
}

.theory-data-item .data-flag::after {
    content: "";
    display: inline-block;
    width: 100%;
    height: 8px;
    border-width: 0px 19px 8px 19px;
    border-color: transparent transparent #F0F0F0 transparent;
    border-style: solid;
    position: absolute;
    left: 0px;
    bottom: 0px;
}

.theory-data-paginate {
    width: calc(100% - 330px);
    height: 100%;
    margin: auto;
    position: relative;
    overflow: auto;
}

    .theory-data-paginate .paginate-item {
        text-align: center;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        display: none;
        z-index: 2;
        width: 100%;
        overflow: hidden;
    }

        .theory-data-paginate .paginate-item.paginate-current {
            z-index: 1;
        }

        .theory-data-paginate .paginate-item .paginate-item-cover {
            text-align: center;
        }

    .theory-data-paginate .paginate-number {
        display: inline-block;
        width: 20px;
        height: 20px;
        text-align: center;
        line-height: 20px;
        text-decoration: none;
        font-family: opensanssemibold;
        font-size: 13px;
        color: #231F20;
        background: #BCBCBC;
        border-radius: 50%;
        box-shadow: 0px 0px 0px 5px #E6E7E8;
        margin: 13px;
        transition: all .3s;
    }

        .theory-data-paginate .paginate-number.paginate-active {
            color: #fff;
            background: #7AC60C;
            box-shadow: 0px 0px 0px 5px rgba(122, 198, 12, 0.2);
        }

.theory-bullet .bullet-item {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    outline: 0px;
    text-decoration: none;
    margin-right: 12px;
    margin-bottom: 12px;
    background: #BBBBBC;
    vertical-align: middle;
}

.theory-bullet-cover {
    text-align: left;
}

.theory-bullet .bullet-item.bullet-active {
    width: 10px;
    height: 10px;
}

.theory-data-item[typeData='1'] .theory-bullet .bullet-item.bullet-active {
    background: #7AC60C;
}

.theory-data-item[typeData='6'] .theory-bullet .bullet-item.bullet-active {
    background: #7AC60C;
}

.theory-data-item[typeData='2'] .theory-bullet .bullet-item.bullet-active {
    background: #F6BD00;
}

.theory-data-item[typeData='3'] .theory-bullet .bullet-item.bullet-active {
    background: #F43442;
}

.theory-data-item[typeData='4'] .theory-bullet .bullet-item.bullet-active {
    background: #00B8F1;
}

.theory-data-item[typeData='5'] .theory-bullet .bullet-item.bullet-active {
    background: #FF7900;
}

.theory-bullet {
    margin-top: 25px;
}

.theory-list-button {
    margin: auto;
    text-align: center;
}

    .theory-list-button .button-item {
        display: inline-block;
        font-family: opensansregular;
        font-size: 13px;
        color: #BBBBBC;
        margin: 0px 20px;
        text-align: center;
        text-decoration: none;
        outline: 0px;
    }

        .theory-list-button .button-item:hover {
            color: var(--color-default-text);
        }

        .theory-list-button .button-item .icon {
            display: flex;
            height: 30px;
            margin-bottom: 5px;
        }

            .theory-list-button .button-item .icon::after {
                content: "";
                display: inline-block;
                margin: auto;
                background: url('../imgs/icon-bg-reading.svg');
            }

        .theory-list-button .button-item.item-1 .icon::after {
            width: 20px;
            height: 24px;
            background-position: 0px -760px;
        }

        .theory-list-button .button-item.item-1:hover .icon::after {
            width: 20px;
            height: 24px;
            background-position: 0px -790px;
        }

        .theory-list-button .button-item.item-3 .icon::after {
            width: 20px;
            height: 20px;
            background-position: 0px -820px;
        }

        .theory-list-button .button-item.item-3:hover .icon::after {
            width: 20px;
            height: 20px;
            background-position: 0px -845px;
        }

        .theory-list-button .button-item.item-4 .icon::after {
            width: 20px;
            height: 20px;
            background-position: 0px -1210px;
        }

        .theory-list-button .button-item.item-4:hover .icon::after {
            width: 20px;
            height: 20px;
            background-position: 0px -1240px;
        }

        .theory-list-button .button-item.item-5 .icon::after {
            background-image: url('../imgs/learning-icon-bg.svg');
            width: 19px;
            height: 21px;
            background-position: 0px -720px;
        }

        .theory-list-button .button-item.item-5:hover .icon::after {
            background-image: url('../imgs/learning-icon-bg.svg');
            width: 19px;
            height: 21px;
            background-position: 0px -750px;
        }

        .theory-list-button .button-item.item-2 .icon::after {
            width: 25px;
            height: 26px;
            background-position: 0px -870px;
        }

        .theory-list-button .button-item.item-2:hover .icon::after {
            width: 25px;
            height: 26px;
            background-position: 0px -900px;
        }


.theory-data-content .icon-info {
    display: inline-block;
    width: 20px;
    height: 20px;
    background: url('../imgs/icon-bg-reading.svg') 0px -1270px;
    outline: 0px;
    text-decoration: none;
    vertical-align: middle;
    border-radius: 50%;
    margin: auto 10px;
}

    .theory-data-content .icon-info:hover {
        background-position: 0px -1300px;
    }


@keyframes animateSound {
    0% {
        box-shadow: 0px 0px 0px 0px #00b8f1;
    }

    100% {
        box-shadow: 0px 0px 0px 10px transparent;
    }
}

@keyframes D {
    0% {
        opacity: 0;
        -webkit-transform: translateX(50px);
        transform: translateX(50px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }
}

@keyframes E {
    0% {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }

    to {
        opacity: 0;
        -webkit-transform: translateX(-50px);
        transform: translateX(-50px)
    }
}

@keyframes DD {
    0% {
        opacity: 0;
        -webkit-transform: translateX(-50px);
        transform: translateX(-50px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }
}

@keyframes EE {
    0% {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }

    to {
        opacity: 0;
        -webkit-transform: translateX(50px);
        transform: translateX(50px)
    }
}

._491z {
    display: none;
}

/*begin fault popup*/
.fault-dialog {
    max-width: 450px;
    width: 100%;
}

    .fault-dialog .modal-content {
        border-radius: 6px;
    }

.fault-title {
    font-size: 20px;
    color: #E43439;
    margin-top: 10px;
    text-transform: uppercase;
}

    .fault-title img {
        margin-top: -5px;
    }

    .fault-title span {
        margin-left: 10px;
    }

.fault-subtitle {
    font-size: 13px;
}

.fault-dialog .close-box {
    margin-right: -30px;
    cursor: pointer;
}

.slt-fault {
    border: 1px solid #4c87ed;
    height: 40px;
    margin-bottom: 15px;
}

.slt-fault {
    border: 1px solid #ddd;
    height: 40px;
    margin-bottom: 0px;
    padding: 10px;
    border-radius: 4px;
}

    .slt-fault:hover {
        cursor: pointer;
    }

    .slt-fault:focus {
        border-color: #E43439;
    }

.slt-fault-option {
    padding: 10px 0px;
    border: 1px solid #ededed;
    position: absolute;
    width: calc(100% - 30px);
    z-index: 1;
    background: #fff;
    border-radius: 4px;
    display: none;
}

    .slt-fault-option span {
        background: #F5F5F5;
        padding: 6px 10px;
        border-radius: 20px;
        width: calc(50% - 20px);
        display: inline-block;
        margin-left: 10px;
        margin-right: 10px;
        font-size: 13px;
        float: left;
        margin-bottom: 10px;
    }

        .slt-fault-option span:hover, .slt-fault-option-active span {
            cursor: pointer;
            background: #F9EDEE;
            color: #E43439;
        }

.txt-fault {
    border: 1px solid #ddd !important;
    margin-bottom: 10px;
    resize: none;
}

    .txt-fault:active, .txt-fault:focus {
        box-shadow: none;
        border: 1px solid #E43439 !important;
    }

.msg-feedback {
    color: #70b100;
}

.cancel-fault {
    margin-top: 15px;
    height: 33px;
    width: 85px;
    display: inline-block;
    background: #fff;
    border: 1px solid #ededed;
    line-height: 31px;
    text-decoration: none;
    margin-left: 5px;
    margin-right: 5px;
    color: #777;
    border-radius: 4px;
    text-transform: uppercase;
}

.send-fault {
    margin-top: 15px;
    height: 30px;
    width: 85px;
    display: inline-block;
    background: #75b924;
    line-height: 30px;
    text-decoration: none;
    margin-left: 5px;
    margin-right: 5px;
    color: #fff;
    border-radius: 4px;
    box-shadow: 0px 2px 1px #649928;
    text-transform: uppercase;
}

.cancel-fault:hover {
    text-decoration: none;
    color: #777;
}

.send-fault:hover {
    text-decoration: none;
    color: #fff;
}

.notification-content a:hover, .mission-content a:hover {
    color: #555;
}

.coin-menu-item a:hover {
    color: #555;
}

.modal-feedback-header {
    padding: 20px 10px 5px;
    border-radius: 6px 6px 0px 0px;
}

#feedback-fault .modal-body {
    padding: 15px 25px 25px;
}

.feedback-has-sent {
    font-size: 20px;
    font-family: opensansbold;
    color: #7ac60c;
}

.feedback-thanks {
    font-size: 15px;
    color: #4c87ed;
}

.feedback-sent-img {
    margin-bottom: 30px;
    margin-top: 75px;
}

#feedback-fault .modal-content {
    min-height: 400px;
}

.modal-content-thanks {
    display: none;
}

.send-fault {
    background: #E43439;
    box-shadow: none;
    height: 35px;
    border: 1px solid #E43439;
    line-height: 35px;
    border-radius: 20px;
    text-transform: none;
    font-size: 15px;
    width: 150px;
}

    .send-fault:hover {
        background: #E43439;
    }

.txt-fault {
    margin-top: 15px;
}

.modal-feedback-header .icon-fault {
    display: inline-block;
    width: 25px;
    height: 25px;
    background-image: url('../img/icon-flashcard.png');
    background-repeat: no-repeat;
    background-position: 0px -348px;
    vertical-align: top;
}

.slt-fault .icon-arrow-down {
    display: inline-block;
    width: 12px;
    height: 6px;
    border: solid transparent;
    border-width: 6px 6px 0px 6px;
    border-top-color: #000;
    vertical-align: 2px;
}

.slt-fault-value {
    width: calc(100% - 12px);
    display: inline-block
}

.slt-fault-option p {
    display: inline;
}

/*end fault popup*/


/* Begin modal Sample */
@media (min-width: 768px) {
    #more-sample-modal .modal-dialog {
        width: 670px;
    }
}

#more-sample-modal .modal-content {
    padding: 30px;
}

#more-sample-modal .modal-sample-title {
    font-family: opensanslight;
    font-size: 20px;
    color: #231F20;
    margin-bottom: 10px;
}

.more-sample-item {
    display: flex;
    border-bottom: 1px solid #E5E5E5;
    padding: 20px 0px;
}

    .more-sample-item:last-child {
        border-bottom: 0px;
    }

    .more-sample-item .item-image {
        width: 94px;
        height: 94px;
        border: 2px solid #fff;
        box-shadow: 0px 0px 5px 0px #E6E7E8;
        margin: auto 0px;
    }

    .more-sample-item .item-data {
        width: calc(100% - 94px - 60px);
        margin: auto 0px;
        padding: 0px 20px;
    }

        .more-sample-item .item-data .data-sentence-en {
            font-family: opensansregular;
            font-size: 15px;
            color: #00BCEF;
            line-height: 22px;
            margin-bottom: 5px;
        }

        .more-sample-item .item-data .data-sentence-vi {
            font-family: opensanslight;
            font-size: 15px;
            color: #414042;
            line-height: 22px;
            margin-bottom: 5px;
        }

    .more-sample-item .icon-sound {
        display: inline-block;
        width: 25px;
        height: 25px;
        background: url('../imgs/icon-bg-reading.svg') 0px -450px;
        outline: 0px;
        text-decoration: none;
        vertical-align: middle;
        border-radius: 50%;
        margin: auto auto auto 0px;
    }

        .more-sample-item .icon-sound.sound-active {
            animation: animateSound 1.5s infinite linear;
        }

    .more-sample-item .icon-info {
        display: inline-block;
        width: 25px;
        height: 25px;
        background: url('../imgs/icon-bg-reading.svg') 0px -1210px;
        outline: 0px;
        text-decoration: none;
        vertical-align: middle;
        border-radius: 50%;
        margin: auto 0px;
    }

        .more-sample-item .icon-info:hover {
            background-position: 0px -1240px;
        }

/* End modal Sample */