body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #dceeff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.stopwatch-container {
  background: #ffffff;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  text-align: center;
}

h1 {
  margin-bottom: 20px;
}

#display {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 30px;
}

.buttons button {
  font-size: 1rem;
  padding: 10px 20px;
  margin: 0 10px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  background: #007bff;
  color: white;
  transition: background 0.3s;
}

.buttons button:hover {
  background: #0056b3;
}