But the big advantage of using Electron is that you know exactly what browser and Node version you are targetting. That takes away a lot of the cross-browser HTML/CSS pain.
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.
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.