hopglass/scss/_forcegraph.scss

.graph {
  height: 100%;
  width: 100%;
  background: url(img/gplaypattern.png);

  canvas {
    display: block;
  }

  svg {
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;

    circle, line {
      opacity: 0;
      stroke-width: 16px;
      cursor: pointer;
    }
  }
}