[bob1029]

I don't really see this as an advantage anymore (especially contrasted against how horrible electron is in terms of memory & CPU utilization). Modern browsers are much better about being consistent with standards.

Perhaps if you are starting from zero on the CSS front you will see minor quirks browser-to-browser, but if you start with something like bootstrap 4 and leverage the responsive layouts you can see consistent results that your clients will enjoy pretty much immediately.