/* SIDEBAR */
.sidebar {
    background: #111;
    color: #fff;
    min-height: 100vh;
    padding: 20px;
}

.sidebar a {
    color: #ddd;
    text-decoration: none;
    display: block;
    padding: 8px 0;
}

.sidebar a:hover {
    color: #fff;
}

/* CONTENT */
#lessonContent {
    border-radius: 12px;
}

/* TEXT */
#lessonContent h1 {
    font-size: 28px;
}

#lessonContent p {
    line-height: 1.7;
}

/* PROGRESS */
.progress {
    height: 10px;
}