Here's a summary about the Blogger feed API that I've collected until now. There are a few more under editorial. I'll update the post after reconfirming the cases.
Widget section layout styling guide for Blogger layout editor.
To customize section layout in the Layout editor, you'll have to use inline style or <b:skin>. Whichever you prefer, it's best to separate the template code for layout and for live view.
Did you notice? When visiting a Blogger blog on mobile devices with a small screen, clicking an internal link can sometimes feel slightly slower than on the desktop.
Blogger (blogspot) Blog widget template data collection. This post uses the Blogger 2nd generation template for a reference (Contempo, Soho, Emporio, Notable, Essential).
