Apply same effect on `a:focus` & `a:active`
Use `em` unit
Fix variable names
Rebuild Data URIs

Change SVGO options:

    $ svgo -i example.svg -o - --disable=removeViewBox --datauri=enc
Fix "Logo" z order
Remove image replacements

The Markup of "Logo" and "Iine!" changes to use `img` element instead of
image replacement.
Update watermark
Flatten "Flat UL" only on medium or larger screen
Optimize heading levels

- Use `h1` for `article`/`section` heading
- Increase heading levels according to previous changes
- Don't use `h1` for logo, use `span` with `id=logo`
- Hide primary heading in "Global Header"
Update styles for print
Nest things can nest
Version 6.44.0