Any recommended stylesheet for OJS 2?

I’m still using OJS 2 for managing my faculty’s journal. I don’t have access to upload theme nor to contact the super administrator. So I decide to make my own style sheet using CSS. However, I don’t have any inspiration to make a beautiful + responsive style sheet with OJS 2.

Would you mind to give me some recommended journal websites with OJS 2 yet has beautiful design as a reference?

Thank you in advance!