sub, sup {
    font-size: 75%;
    line-height: 1;
    position: absolute;
    vertical-align: baseline;
}
.course-wrap {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.course-wrap-user {
    grid-template-columns: repeat(4, 1fr);
}
.course-wrap .items-course {
    background-color: rgb(241 245 248);
    border-radius: 8px;
    /* box-shadow: 0px 2px 6px 0px #0000001A; */
}
.course-wrap .items-course .box-image {
    height: 250px;
    width: 100%;
}
.course-wrap .items-course .box-image img {
    height: 100%;
}
.course-wrap .items-course .box-text {
    padding: 10px;
}
.course-wrap .items-course .box-text .tile-course {
    color: #000000;
    font-weight: 500;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    margin-bottom: 10px;
}
.course-wrap .items-course .box-text .info {
    color: #000000;
}
.course-wrap .items-course .box-text .price_course {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-top: 10px;
}
.course-wrap .items-course .box-text .price_course .price_sale {
    color: #000000;
    font-size: 1.25rem;
    line-height: 1.75rem;
    font-weight: 500;
    position: relative;
}
.course-wrap .items-course .box-text .price_course .price {
    -webkit-text-decoration-line: line-through;
    text-decoration-line: line-through;
    font-size: 0.875rem;
    line-height: 1.25rem;
}

/* css single  */
.single-course .content {
    border: 1px solid rgb(146 146 146 / 1);
    padding: 16px;
    border-radius: 8px;
}
.items-course-single {
    background-color: rgb(241 245 248);
    border-radius: 8px;
    padding: 16px;
}
.items-course-single .box-image {
    height: 250px;
    width: 100%;
}
.items-course-single .box-image img {
    height: 100%;
}
.items-course-single .box-info-course .price_course {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
    margin-top: 10px;
}
.items-course-single .box-info-course .price_course .box-price {
    display: flex;
    gap: 20px;
    align-items: flex-end;
    color: #000000;
    margin-top: 10px;
    font-size: 1.875rem;
    line-height: 2.25rem;
}
.items-course-single .box-info-course .price_course .box-price .price_sale {
    font-weight: 600;
}
.items-course-single .box-info-course .price_course .box-price p {
    margin-bottom: 10px;
}
.items-course-single .box-info-course .price_course .box-price .price {
    -webkit-text-decoration-line: line-through;
    text-decoration-line: line-through;
    font-size: 1.125rem;
    line-height: 1.75rem;
    color: rgb(146 146 146 / 1);
}
.items-course-single .box-info-course .info p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}
.items-course-single .box-info-course .info p span {
    font-weight: 600;
    color: #000000;
}
.items-course-single .custom-btn {
    margin-bottom: 16px;
}
.btn-vao-hoc {
    background-color: blue;
    padding: 8px !important;
    color: #fff !important;
    border: none;
    text-transform: uppercase;
    font-weight: 700;
    -webkit-transition: all .3s linear;
    -o-transition: all .3s linear;
    transition: all .3s linear;
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}
.custom-btn {
    width: 100%;
    height: 45px;
    background-color: #008fea;
    color: #fff;
    border: none;
    text-transform: uppercase;
    font-weight: 700;
    -webkit-transition: all .3s linear;
    -o-transition: all .3s linear;
    transition: all .3s linear;
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
    cursor: pointer;
}
.btn-thanh-toan {
    background-color: rgb(230 107 34 / 1);
}

/* css register  */
.register-course .content {
    border: 1px solid rgb(146 146 146 / 1);
    padding: 16px;
    border-radius: 8px;
}
.register-course .item-order {
    background-color: rgb(241 245 248);
    border-radius: 8px;
    padding: 16px;
}
.register-course .item-order .title-course {
    line-height: 1.2em;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid #ddd;
}
.register-course .item-order .box-info-course .price_course {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
}
.register-course .item-order .box-info-course .price_course .box-price {
    display: flex;
    gap: 20px;
    align-items: center;
    color: #000000;
    font-size: 1rem;
    line-height: 1.4rem;
}
.register-course .item-order .box-info-course .box-price .price_sale {
    font-weight: 600;
}
.register-course .item-order .box-info-course .box-price p {
    margin-bottom: 10px;
}
.register-course .item-order .box-info-course .box-price .price {
    -webkit-text-decoration-line: line-through;
    text-decoration-line: line-through;
    font-size: 1rem;
    line-height: 1rem;
    color: rgb(146 146 146 / 1);
}
.register-course .item-order .total-amount {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #ddd;
    padding-top: 10px;
}
.register-course .item-order .total-amount span {
    font-weight: 600;
    color: #000;
    font-size: 1.2rem;
}
.register-course .item-order .total-amount .total {
    color: rgb(230 107 34 / 1);
}

/* Css message  */
.box-message {
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 1em;
}

/* Css content lesson  */
.content-lesson .title-lesson {
    font-size: 1.2em;
    margin-top: 1em;
    margin-bottom: 1em;
}

/* Css box list lesson  */
.wraper-list-lesson {
    padding: 0;
    border-radius: 8px;
    border: 1px solid rgb(146 146 146 / 1);
}
.wraper-list-lesson h3 {
    font-size: 1.2em;
    font-weight: 700;
    padding: 10px;
    margin-bottom: 0;
    border-bottom: 0.5px solid #B5B5C3;
}
.wraper-list-lesson .list-item-lesson {
    background-color: rgb(247 249 250 / 1);
    margin-bottom: 10px;
}
.wraper-list-lesson .list-item-lesson .item {
    list-style-type: none;
    margin-bottom: 1px;
    padding-left: 10px;
}
.wraper-list-lesson .list-item-lesson .item + .item {
    border-bottom: 0.5px solid #fff;
}
.wraper-list-lesson .list-item-lesson .item.active,
.wraper-list-lesson .list-item-lesson .item:hover {
    background-color: #ddd;
}
.wraper-list-lesson .list-item-lesson .item a {
    font-size: 16px;
    font-weight: 500;
    color: #000000;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 6px;
}
.wraper-list-lesson .list-item-lesson .item.active a svg, 
.wraper-list-lesson .list-item-lesson .item:hover a svg {
    color: rgb(230 107 34 / 1);
}
.wraper-list-lesson .list-item-lesson .item a svg {
    width: 16px;
}

.content-checkout {
    display: flex;
    gap: 20px;
    width: fit-content;
}
.archive-course, .box-content-course {
    margin-top: 16px;
}