Allow more precise scrollbar width in Chrome

[fastaddons]

Chrome API supports more scrollbar options than Firefox so I guess I could add more options for Chrome.
MDN:
Firefox:
https://developer.mozilla.org/en-US/docs/Web/CSS/scrollbar-width
Chrome:
https://developer.mozilla.org/en-US/docs/Web/CSS/::-webkit-scrollbar

But there is so many options, it needs to be done right.
Maybe I should do this after I move to some better UX framework (Vue + Vuetify), then it would be much easier to add many complex options.