#container {
  display: flex;
  justify-content: center;
  align-items: center;
}
#bulb {
  border: 1px solid black;
  border-radius: 50%;
  /* background-color: yellow; */
  height: 100px;
  width: 100px;
}
button {
  margin: 50px;
  padding: 10px;
}