Adjust Design (CSS) of Blogger Theme

GOAL:  Adjust the styling (CSS) design of a Blogger website / blog.  The CSS below shows adjustments I made to the default "theme" of this blog, my "architeering" site joshwentz.blogspot.com.

STEPS
  1. Blogger.com
  2. Theme (on left panel)
  3. I chose the "Emporio Porcelain" theme
  4. Customize
  5. Advanced
  6. Add CSS
  7. Copy and paste the CSS from the code below (if you want the same styling adjustments as this blog)
  8. Apply to Blog
SCREENSHOT

CODE - only the CSS tab is relevant

See the Pen Blogger CSS adjustments for Architeering Blog by Josh Wentz (@joshwentz) on CodePen.