body {
    background-color: #0f0f0f;
    color: #f5f5f5;
    font-family: 'Segoe UI', sans-serif;
    text-align: center;
    padding-top: 10vh;
    margin: 0;
}
.container {
    max-width: 600px;
    margin: auto;
}
h1 {
    color: #ff6600;
    font-size: 2em;
}
footer {
    margin-top: 2em;
    color: #888;
}