However, I see in a post from two years ago, which I think I followed when I modified style.css:
https://colorlibsupport.com/t/how-to-change-sidebar-width-for-travelify-theme/
> You have created fixed width for #secondary which means that it is no longer responsive. You should > use max-width or width in percentages like It is in clean Travelify theme.
> If you are changing width (in percentage) for #secondary, then you should change width for #primary > as well.
So I thought specifying the widths in percantages is the right way, and the site should remain responsive.
Or?
Marcin