body {
  font-family: Arial, sans-serif;
  background: linear-gradient(to right, #1db954, #191414);
  color: white;
  text-align: center;
  padding: 50px;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  max-width: 600px;
  width: 100%;
}

button {
  background-color: #1db954;
  color: white;
  padding: 12px 24px;
  border: none;
  font-size: 16px;
  cursor: pointer;
  border-radius: 8px;
  margin-top: 20px;
}

button:hover {
  background-color: #17a44a;
}

.hidden {
  display: none;
}