update fonts

[fmichonneau]

This addresses #168.

In addition to using Ubuntu for the font of the text, I kept the default font for the navigation and the footer, tweaked slightly the size of the fonts, and use Lato for the headers.

Before:

After:

[maxim-belkin]

This implementation lacks bold/italics/bold italics variants of Ubuntu. Also, TBH, I'm not sure I like Lato font more than Ubuntu for titles.

Here is a CSS I created for my other project. For that, I had to download Ubuntu fonts from here, unpack them, and create that CSS. It defines Ubuntu and Ubuntu Mono.

[rgaiacs]

In addition to using Ubuntu for the font of the text, I kept the default font for the navigation and the footer, tweaked slightly the size of the fonts, and use Lato for the headers.

Why keep the font for navigation and use another for headers? My reading of your sentence is "navigation and headers are second class citizens in our lesson that don't need to be accessible to everyone."

[rgaiacs]

@fmichonneau any update on this one?

[fmichonneau]

The Carpentries remote theme uses Ubuntu (and has done so since May 2019). I haven't heard compliments or complaints about it. Maybe it's time to bring this proposed change to the maintainers?