Optimize my website

Hello everyone,

I would like to ask you, if there is any possibilites to optimize my website for different screens sizes?
I know that Wix.com offer two choices, one on desktop and other on mobile phone, but I need to create a website which will be just good- looking on other devices (screen sizes) and not only on those two. I know, that I should keep it in the “gridlines,” but is there any possibilities to do without staying in in them?

Thank you for your answers.

If you use elements like → STRIPS and REPEATERS your site will act absolutely RESPONSIVE and you won’t need any screen-resolution-optimizations.

STRIPS & REPEATERS are fully RESPONSIVE.