#header nav {
    top: 3.75em;
}

#header.alt nav {
    top: 4.75em;
}

#banner {
    padding: 9em 0;
}

#main {
    padding: 9em 0;
}

.course-header {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 300px;
    text-align: center;
}

.h1-course {
    color: inherit;
    font-weight: 300;
    line-height: 1.75em;
    margin: 0;
    font-size: 2.8rem;
}