body {
  margin: 0;
  padding: 0;
  height: 100vh;
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f4f4f4;
}

.container {
  text-align: center;
}

.controls {
  margin-bottom: 20px;
}

#lamp {
  width: 150px;
  height: auto;
  transition: all 0.3s ease;
  cursor: pointer;
}