CB registration form

Is there a simple way to make the registration form more readable. Our members are all 65+ and many of them find that the form is hard to read.

The font size used is much too small for them. A size of at least 12pt is welcome.

On the fora, I can't find any hint how to achieve this and so, I hope someone can help me.
In att a copy of the form as it shows on our website.

Small font is due to a bad template setting root font size on the html element instead of the body element. See the below regarding this.

www.joomlapolis.com/forum/6-news-and-publicity/239316-community-builder-2-2-bootstrap-4-release?start=6#305472

I've tried to add this css to the custom.css file of the installed template.

First, this had no result but perhaps I made a typing error.

Second time was the good time. Thanks!

Well I would be happy knowing into which css I have to write it. I cannot find any custom.css ...
I found these css - data:




Thanks for any help.

See the below on how to add custom CSS to CB.

www.joomlapolis.com/blog/kyle/18711-template-css-overrides-made-easy