body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: linear-gradient(135deg, #ffcccc, #99ccff);
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
}

.stopwatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 100px;
}

.units {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.unit {
  font-size: 40px;
  padding: 10px;
  background-color: #ffcccc;
  border-radius: 5px;
  margin: 0 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.control-button {
  font-size: 20px;
  padding: 10px 20px;
  margin: 5px;
  background-color: #99ccff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.control-button:hover {
  background-color: #66b3ff;
}

.control-button:active {
  background-color: #3385ff;
}