.CheckoutForm{max-width:1024px;margin:0 auto;padding:1rem;text-align:center;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif}.CheckoutForm button[type=submit]{display:block;margin-right:auto;margin-left:0;margin-top:1rem}.container{display:flex;flex-direction:column;align-items:center;justify-content:center}@media (max-width: 640px){.App{max-width:90%}}h1,h2,h3{margin-bottom:1rem}button{padding:.5rem 1rem;margin:.5rem;border-radius:4px;border:1px solid #ccc;background-color:#f8f9fa;cursor:pointer}button:hover{background-color:#e9ecef}.error-message{color:#e63946;background-color:#f8d7da;border:1px solid #f5c6cb;border-radius:4px;padding:10px;margin-top:16px;text-align:left;width:100%}.error-message strong{font-weight:600}.App{max-width:800px;margin:0 auto;padding:20px}.controls{display:flex;gap:20px;margin-bottom:20px;padding:15px;border:1px solid #ddd;border-radius:4px;background-color:#f9f9f9}.controls div{display:flex;align-items:center;gap:8px}.controls label{font-weight:700}.controls select,.controls input{padding:8px;border:1px solid #ccc;border-radius:4px}