Do you think working across devices is getting more complicated, or less so? I really dislike sites that use the thin, light gray lettering on large screens. Maybe it looks good on a phone, but it really strains my eyes otherwise. Dark text!
And good on you, for continuing to learn! Steemit has been a real learning experience for me!
I'm not a designer, but some sites don't work so well. They could offer different themes using CSS I expect