body { font-family: Arial, sans-serif; margin: 0; padding: 20px; background: #f9f9f9; }
header { background: #222; color: #fff; padding: 20px 0; text-align: center; }
main { margin: 20px auto; max-width: 600px; text-align: center; }
button, .button { background: #ff4081; color: #fff; border: none; padding: 10px 20px; cursor: pointer; margin: 10px 0; text-decoration: none; display: inline-block; }
button:hover, .button:hover { background: #e73370; }
footer { text-align: center; margin-top: 30px; }