I've been struggling to satisfy Google with a mobile version of forms on a new website. I know they've been experimenting with new algorithms for mobile usability. They keep telling me that my meta tag setting device width is missing (it's not), and that fonts are too small. I've increased font sizes in my template to 16px, but how do I set the font sizes for the hints below a name field,etc? They are small and maybe Google doesn't like that.