Design suggestions & notes

[Frando]

From @flub:

• the fonts of our websites are too small by default imho. they're a "dense information" size not a "nice reading" size

From @Frando

• add "Blog" to the top-right header menu next to docs youtube github
• make that menu darker, it has too low contrast vs the grey background
• In all honesty I never really got that grey, whirly background on the iroh homepage, to me it is neither particularily aesthetically pleasing nor does it really convey much to me, so I would tend to look for other ideas