I'm working on a GP widget which I'd hoped would be out of the box. One of the input parameters is a list of layer names which the user picks multiple options. Out of the box the WAB has an input method in simpleeditor.js that makes a bunch of checkboxes. The checkboxes aren't necessarily a problem, but they're not very organized. In desktop they're in a box with a scroll bar with one checkbox per line. That isn't the case in the WAB. I'm looking for someone who has found a good way to tidy this up or a suggestion that leads me to a good way to deal with it..