body {
  background-color: #111;
  margin: 0px;
  padding: 0px;
}

button {
  position: absolute;
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  font-family: 'commodore_pixelated';
  font-size: 1em;
  background-color: #222;
  border-radius: 10px;
  border:none;
  padding: 20px;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
  transition: 0.5s;
}

button:hover {
  background-color: #333;
}

.center {
  display: flex;
  align-items: center;
  justify-content: center;
}

#restart_button {
  bottom: 100px;
  left: 10px;
}

#back_button {
  bottom: 10px;
  left: 10px;
}

#canvas {
  background-color: #000000;
  width: 1600px;
  height: 900px;
}