html, body {
  overflow-x: hidden;
}

header {
  position: relative;
}

.imgL, .imgR, .img-center {
  position: relative;
}

canvas.img-glitch {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 1;
  margin: 0 auto;
  max-width: 100%;
  pointer-events: none;
}

canvas.hed-glitch {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  max-width: 100%;
  pointer-events: none;

  /* debug */
  /*z-index: 1;*/
  /*background: yellow;*/
  /*opacity: .5;*/
}

canvas.hed-glitch-virtual {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  z-index: -2;
}