body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #1a1a1a;
    color: #e0e0e0;
}

header {
    background-color: #2a2a2a;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

nav ul li {
    display: inline;
    margin: 0 1rem;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

nav ul li a:hover {
    background-color: #444;
}

.moto {
    font-style: italic;
    margin-top: 1rem;
}

.hero img {
    width: 100%;
    display: block;
}

main {
    padding: 2rem;
}

.content {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1.5rem;
    background-color: #333;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.class-section {
    border-left: 5px solid #007bff;
}

footer {
    text-align: center;
    padding: 1rem 0;
    background-color: #2a2a2a;
    color: #fff;
}

@media (max-width: 768px) {
    nav ul li {
        display: block;
        margin: 0.5rem 0;
    }
}