body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    color: #333;
}

header {
    background: black;
    color: white;
    text-align: center;
    padding: 15px 0;
}

header h1 {
    margin: 0;
}

nav {
    background: #222;
    padding: 10px;
    text-align: center;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
}

nav a:hover {
    color: gold;
}

.container {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background: white;
    text-align: center;
}