Haw do i change the font size of all pages using ion-range in ionic 4

[mhartington]

At the moment, this is not possible, since all the font sizes are set independently.

A quick search would’ve brought you this page

[ionic 4] ion-range slider to programatically change all element sizes globally

What I want to achieve is the following: Have a settings page where there is an ion-range slider that allows the user to change the size of all elements inside of the app globally. Meaning the entire app will become bigger and thus easier to read for people with bad eyesight. Meaning if the slider is on the right the size of all elements become bigger. I’ve tried doing this in ionic 3 with font-size on the html element, which worked there, however when I try to do this in ionic 4 for some rea…