body { font-family: Arial, sans-serif; background-color: #f5f5f5; margin: 0; padding: 0; } h1, h2 { color: #333; font-weight: bold; margin-top: 20px; margin-bottom: 10px; text-align: center; } p { color: #555; font-size: 16px; margin: 0 0 15px 0; text-align: center; } .container { max-width: 600px; margin: 0 auto; padding: 20px; background-color: #fff; box-shadow: 0 0 5px rgba(0,0,0,0.3); } @media screen and (max-width: 768px) { .container { max-width: 100%; padding: 20px 10px; } }