main {
    margin-top: 2.5rem;
    width: 68rem;
    flex-direction: row;
    align-items: flex-start;
    padding: var(--spacing-md);
    gap: 2rem;
    font-size: 1.2rem;
}

#courses-block {
    flex-shrink: 0;
}

#courses-list {
    position: relative;
    width: 100%;
    padding: var(--spacing-md) 0;
}

#courses-list pre {
    margin: 0;
    overflow: hidden;
}

.course {
    margin: 0.25rem 0;
    padding: 0.375rem var(--spacing-sm);
}

#course-description-block {
    flex: 1;
    max-width: 50rem;
}

#course-description-block pre {
    margin: 0;
    overflow: hidden;
}

.course-description {
    display: none;
    margin: var(--spacing-sm) 0;
}

.course-item {
    position: relative;
}

.course-item:hover {
    cursor: pointer;
}

.course-item .course-description {
    display: none;
    position: absolute;
    left: 60%;
    width: 55%;
    padding: var(--spacing-sm);
    background-color: var(--color-bg);
    border: 1px solid var(--color-primary);
    box-shadow: 0 0 0.3rem var(--color-primary);
}

.course-item:hover .course-description {
    display: block;
}

.course-item:hover .course {
    color: var(--color-hover);
}