Mobile browsers do all kinds of special tricks that you need to manually disable. text-size-adjust is one of those properties that was added long after browsers

Mobile browsers do all kinds of special tricks that you need to manually disable. text-size-adjust is one of those properties that was added long after browsers artificially resized fonts to be larger than specified by CSS (and is still considered experimental from a standards point of view). I wouldn't trust websites to apply my phone's font size the same way browsers do. Websites that do override the zoom factor often end up with huge fonts on my phone because I have the font size turned down (what's the point of a 6" slab of glass if you scale up the text so you get the same amount of information as on a 3" screen?). The more power you give to CSS, the more power you give designers like this: https://stackoverflow.com/questions/68936634/how-to-ignore-the-phones-font-size-setting-with-css https://stackoverflow.com/questions/68936634/how-to-ignore-t...