body { background-color: #000; color: #fff; font-family: Arial, sans-serif; text-align: center; padding: 20px; }
h1 { color: #000; background-color: #fff; padding: 10px; border-radius: 8px; }
.button-container { margin-top: 20px; }
.btn { display: block; margin: 10px auto; padding: 15px; width: 80%; font-size: 18px; background: #fff; color: #000; border: none; border-radius: 8px; cursor: pointer; }
.btn:hover { background: #ddd; }