html, body {
  margin: 0;
  padding: 0px;
}
div.canvasContainer{
  width: 100%;
  height: 100vh;
  position: relative;
}
canvas {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);

}