d98762625

See the tests in this PR, you will see two unexpected behaviours. Investigate these and raise or fix appropriately before merging.

I'd vote for a responsive UI using a [flex-grid ](https://foundation.zurb.com/sites/docs/xy-grid.html) or similar. I do not back my frontend skills enough to take this on though.

@Cal-Hagner I'd maybe change the order of `Output` and `Input`. Would be interested in seeing a visual template!