body {
  background: url('background.jpg') no-repeat center center fixed;
  background-size: cover;
  color: white;
  font-family: 'Arial', sans-serif;
  text-align: center;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  width: 70%;
  max-width: 400px;
  margin: auto;
  padding: 20px;
  background-color: rgba(0, 0, 0, 0.6); /* pour lisibilité sur l'image */
  border-radius: 12px;
}

h1 {
  font-size: 7vw;
  margin-bottom: 20px;
}

input {
  font-size: 6vw;
  padding: 12px;
  width: 80%;
  max-width: 300px;
  margin: 0 auto 30px auto;
  text-align: center;
  border-radius: 8px;
  border: none;
	display: block;
}

button {
  font-size: 5vw;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  background-color: #ffffff;
  color: #1a1a1a;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #ddd;
}

#message {
  margin-top: 20px;
  font-size: 4vw;
}

instruction {
  font-size: 4.5vw;
  margin-bottom: 20px;
  color: #ffffff;
}


