html {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background-color: rgb(36, 36, 36);
}

body{
  margin: 0px;
  background-color: rgb(36, 36, 36); 
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

canvas{
  margin: auto;
  display: block;
}