I didn't like how the highlighted edge of the glass didn't change as the pane was moved around, here's a way to fix that: <https://codepen.io/webstrand/pen/OPLL

I didn't like how the highlighted edge of the glass didn't change as the pane was moved around, here's a way to fix that: <https://codepen.io/webstrand/pen/OPLLBZN https://codepen.io/webstrand/pen/OPLLBZN>