body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #1a1a1a;
    color: #fff;
}

header {
    background-color: #000;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
    font-weight: bold;
    font-size: 1.5rem;
}

nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    text-align: center;
    background-color: #222;
    padding: 0.5rem 0;
}

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

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

nav a:hover, nav a.active {
    background-color: #ff0000;
    color: #fff;
}

main {
    padding: 2rem;
}

footer {
    background-color: #000;
    color: #fff;
    padding: 1rem;
    text-align: center;
    margin-top: 2rem;
}

h1, h2 {
    color: #fff;
    text-align: center;
}

.container {
    max-width: 960px;
    margin: 0 auto;
}

p {
    line-height: 1.6;
}