body{
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: black;
}
#canvas{
  background-color: orange;
  align-items: center;
}
#container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
#btn {
  width: 300px;
  height: 100px;
  font-size: 50px;
}