body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f4f4f9;
  color: #333;
  text-align: center;
}

header {
  background: #ff6b6b;
  color: white;
  padding: 40px 20px;
  border-radius: 8px;
}

button {
  background-color: #4ecdc4;
  color: white;
  border: none;
  padding: 12px 24px;
  font-size: 16px;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 15px;
}

button:hover {
  background-color: #45b7aa;
}

form {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 300px;
  margin-left: auto;
  margin-right: auto;
}

input {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.hidden {
  display: none;
}