Just as an aside...

With the latest release of Elementor Pro (version 2.0), you can now visually customize your headers, footers, archive pages, single post pages and other areas of your site.

This not only saves you time, but introduces a whole new drag and drop experience to building WordPress website, and is light years ahead of Gutenberg.

With Elementor Pro 2.0, you can start thinking of templates (not blocks) as design units, capable of customizing each and every area of your site (including your blog, footer and so on).

Until now this was a restriction of all page builders, not just Gutenberg, where they all leave parts of the website to be coded at the theme level.

Gutenberg still has a long way to go.