body {
  font-family: Arial, sans-serif;
  background-color: #f0f4f8;
  color: #333;
  text-align: center;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 400px;
  margin: 100px auto;
  padding: 20px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
  margin-bottom: 20px;
}

.timer-display {
  font-size: 3rem;
  margin: 20px 0;
}

.controls button {
  font-size: 1rem;
  padding: 10px 20px;
  margin: 5px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

#start-btn {
  background-color: #28a745;
  color: white;
}

#reset-btn {
  background-color: #dc3545;
  color: white;
}

#status {
  font-size: 1.2rem;
  margin-top: 20px;
  color: #555;
}