body { margin: 0; font-family: Arial, sans-serif; text-align: center; }

main { padding: 15px; }

img { max-width: 100%; }

input { width: 80%; max-width: 300px; font-size: 18px; padding: 6px; }

button { padding: 10px 25px; font-size: 16px; cursor: pointer; }

#resultat { display: none; }