The quick specs are under the description of the theme. ??
Quick Specs (all measurements in pixels)
The main column width is 620 except in the full-width layout where it’s 778.
A widget in the sidebar is 250.
A widget in the Footer Widget Area or Front Page Widget Area is 320.
The featured image on the front page and on pages works best with images at least 1180 wide.
Featured Images for posts should be at least 820 wide by 312.
