title: Scale all fonts with css/js
body: <p>I need to change the size of all fonts with one click (so it's adjusted for people with eyesight problems). After next click it should go back to normal. What's the easiest way to do so? I don't want to access every single text as there's a lot of them. I would like to scale all by approximately 20-50%. Is there an easy way to do so? I use bootstrap and jQuery.</p>