.courses-container {
    padding: 2rem;
}

.courses-container h1 {
    margin-bottom: 1rem;
}

.courses-container h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.courses-container ul {
    list-style-type: decimal;
    margin-left: 2rem;
}

.courses-container li {
    margin-bottom: 0.5rem;
}

.video-container {
    margin-top: 2rem;
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}