Increase text-heading margins slightly

[PeterRydberg]

Is your feature request related to a problem? Please describe.
Most of the text is just a little too close to feel natural.

Describe the solution you'd like
Sectioning off different blocks of text is easier when there's a little more space between them.

Describe alternatives you've considered
I have a few suggestions. Keep in mind that I do not know the exact measurements of the different variables used, so I'm going with ems.

• Paragraph to heading below the chart should be 2em (is var(--spacing-4))
• Grid gap in info-box should be 2em (is var(--spacing-4)). The gaps in the internal text inside each div is fine, I think.
• The font size on each item (e.g Norsk) is a little too close in size to the heading above. Should be 1.25em (is var(--font-size-lg)).

Additional context
The info box should look like this (using the CSS from #71):