#particle-canvas {
    width: 100%;
    height: 100%;
    
    vertical-align: middle;
  }


  #bg {

    position: fixed;

    top: 0;

    left: 0;

    width: 100%;

    height: 100%;

    z-index: 0;

}



#bg canvas {

    position: absolute;

    top: 0;

    left: 0;

    width: 100%;

    height: 100%;

}