html, body, #game
{
  height: 100%;
  margin: 0;
  background-color: black;
  color: white;
}

#game
{
  display: flex;
}

canvas
{
  margin: auto;
}

footer
{
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
}

footer p
{
  display: inline-block;
}