I notice that if increase the height of a WebButton in Inspector, this seems to have effect on the size of that button when the browser draws it. Using Chrome on a Mac.
Interesting, I had even tried setting the height property in code at run time, and tried adding a style (Text Color) -- I also tried changing the corner radius. The Text Color style change worked...but none of the other changes worked...until I changed the background color. Seems unintuitive...but ok. I do see it documented where web button is implemented as a native browser control. So happy these forum discussions are left out here for years :-)