a.link-concept:link, a.link-concept:visited, a.link-concept:hover {
    color: #705c3e;
    font-weight: 600;
    text-decoration: none;
}
a.link-lesson:link, a.link-lesson:visited, a.link-lesson:hover {
    color: #5c703e;
    font-weight: 600;
    text-decoration: none;
}

ul.concept-list, ul.lesson-list {
    list-style-type: square;
}
ul.concept-list > li, ul.lesson-list > li {
    margin-top: 0;
    margin-bottom: 0;
    font-size: .7em;
}