.course-list {
    margin: 0 0 20px;
    display: flex;
    flex-wrap: wrap;
}

.course-list .course-item {
    margin-bottom: 20px;
}

.course-list .course-item > div {
    box-shadow: 0 0 10px 2px #eee;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: space-between;
}

.course-list .course-item:hover {
    transform: scale(1.02);
    transition: ease-in-out 0.3s;
}

.course-list .course-item img {
    width: 100%;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
}

.course-list .course-item .item-text {
    padding: 0 20px 10px;
}

.course-list .course-item h3 {
    color: #000;
    margin: 8px 0;
    font-size: 18px;
}

.course-list .course-item span {
    color: #555;
    font-size: 12px;
}

.detail-content .detail-video {
    padding: 50px;
}

.detail-content iframe {
    width: 100%;
    height: unset;
    aspect-ratio: 16/9;
}

.video-title h2 {
    color: #000;
    margin: 10px;
}

.course-introduce {
    background: #fff3f3;
    margin: 20px 0 80px;
}

.course-introduce .container > div {
    background: #fff;
    margin: 50px;
    padding: 20px;
    border-radius: 20px;
    color: #000;
}

.course-introduce .container h3 {
    font-size: 26px;
}

@media (max-width: 767px) {
    .detail-content .detail-video {
        padding: 0;
    }

    .course-introduce .container > div {
        margin: 15px 0;
        word-break: break-all;
    }
}