.container {
  max-width: 400px;
  margin: 2rem auto;
  text-align: center;
  font-family: Arial, sans-serif;
}

.timer {
  font-size: 2rem;
  margin: 1rem 0;
}

.phase {
  font-size: 1.2rem;
  margin-top: 0.5rem;
  color: #555;
}

button {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  cursor: pointer;
}