body {
  margin: 0;
}

#canvas-container-div {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 100%;
  height: 100%;
}

#canvas {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 100%;
  height: 100%;
  background: #000000;
}

#restart-button-div {
  position: absolute;
  bottom: 25px;
  right: 25px;
  width: 50px;
  height: 50Px;
  background: white;
  opacity: 0.7;
  cursor: pointer;
  border-radius: 100%;
}

#restart-icon {
  position: absolute;
  top: 50%;
  left: 47%;
  transform: translate( -50%, -50% );
  width: 35px;
  height: 45px;
}