body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #101820;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

.container {
  text-align: center;
  background: #1e2a38;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
}

h1 {
  margin-bottom: 20px;
  color: #00ffff;
}

#display {
  font-size: 3rem;
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.buttons button {
  margin: 10px;
  padding: 12px 20px;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  background-color: #00ffff;
  color: #000;
  cursor: pointer;
  transition: all 0.2s ease;
}

.buttons button:hover {
  background-color: #00cccc;
  transform: scale(1.05);
}

#laps {
  margin-top: 20px;
  list-style: none;
  padding: 0;
}

#laps li {
  background-color: #273746;
  margin: 5px auto;
  padding: 10px;
  border-radius: 6px;
  width: 80%;
}