body {
  font-family: Arial;
  background: #f1f5f9;
  text-align: center;
}

.container {
  margin-top: 80px;
}

input {
  padding: 10px;
  margin: 8px;
  width: 250px;
}

button {
  padding: 10px 20px;
  margin: 8px;
  background: #2563eb;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background: #1e40af;
}

.timer {
  font-size: 40px;
  margin: 20px;
  color: #2563eb;
}