How to design Semantic UI data table in Photoshop [on hold]

I am new in UX world and just started my career. Anyway, I am working on UI for a new product and have to make a lot of screens in Photoshop, which will be used for developing in the same time. The whole idea is to make a screens for prototyping in Invision.

First screen is already finished and I made dashboard with top bar with left vertical menu and content area in center. And guys like it!

Developers in my team has decided to use Semantic UI framework and I have a issue to find Semantic UI spec on the web. There is a lot material about developing data tables but nothing about standards dimensions for rows, spacing check boxes etc. With other words my developer can build a tables in Semantic Framework but I can't design anything and he suppose to follow my design.

What I should do?

Does anybody know Semantic style guide or spec with standard dimensions for tables ?

I appreciate any help!

Regards Bane