Little humble brag, but here is a CodePen demo I made a little more than a year ago with a similar idea in mind: http://codepen.io/bennettfeely/details/pjgrRL?

Little humble brag, but here is a CodePen demo I made a little more than a year ago with a similar idea in mind: http://codepen.io/bennettfeely/details/pjgrRL?preview_height=442 http://codepen.io/bennettfeely/details/pjgrRL?preview_height...