body {
    background-color: #121212;
    color: #f0f0f0;
    font-family: 'Segoe UI', Tahoma, sans-serif;
    margin: 0;
    padding: 0;
}
header, footer {
    background-color: #1e1e1e;
    padding: 20px;
    text-align: center;
}
nav {
    background-color: #1a1a1a;
    padding: 10px;
    text-align: center;
}
nav a {
    color: #ffcc00;
    margin: 0 10px;
    text-decoration: none;
    font-weight: bold;
}
h1, h2 {
    color: #ffcc00;
}
section {
    padding: 20px;
    max-width: 1000px;
    margin: auto;
}
img {
    max-width: 100%;
    display: block;
    margin: 20px auto;
    border-radius: 8px;
}
a {
    color: #ffcc00;
}
ul {
    list-style-type: square;
    padding-left: 20px;
}
@media (max-width: 768px) {
    nav a {
        display: block;
        margin: 10px 0;
    }
}