body {
    font-family: Arial;
    margin: 0;
    background: #0f172a;
    color: white;
}

header {
    background: #1e293b;
    padding: 20px;
    text-align: center;
}

nav a {
    margin: 0 10px;
    color: #38bdf8;
    text-decoration: none;
}

section {
    padding: 40px;
    text-align: center;
}

footer {
    background: #1e293b;
    padding: 10px;
}