body {
  margin: 0;
  padding: 0;
  background: linear-gradient(to right, #283e51, #485563);
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: white;
}

.container {
  text-align: center;
}

h1 {
  margin-bottom: 20px;
  font-size: 2.5rem;
}

#display {
  font-size: 3rem;
  margin-bottom: 20px;
}

.buttons button {
  margin: 8px;
  padding: 10px 20px;
  font-size: 1rem;
  background-color: #f39c12;
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: 0.3s;
}

.buttons button:hover {
  background-color: #d35400;
}

#last-time {
  margin-top: 20px;
  font-size: 1rem;
  color: #ddd;
}