Docs improvments - CSS

[Kemi-Elizabeth]

Where on docs.platform.sh should be changed?

• All grey block links on the landing pages should be the same width (ie. https://docs.upsun.com/languages.html, https://docs.upsun.com/manage-resources.html etc)
• The button on the Try Upsun for 15 days CTA needs to have the text on two separate lines when it gets to 15-days. ie - Activate your
  15-day trial (I've just included a break tag between 'your' and '15')
• The gradient buttons at the bottom of the page (ie. https://docs.upsun.com/get-started/here/setup.html) needs to be revamped? Like maybe a solid colour consistently instead of being solid only on hover? Or maybe it shouldn't be a button at all and just a link.
• More spacing between each link on the right hand navigation in each page or maybe bullets to make them more distinct from each other (ie. the right hand nav in this page that shows all the headings on the page). Right now I feel like they look a bit squashed (very pedantic though)
• Very, very pedantic but the code snippet blocks have rounded corners up top, while the file name above (ie. settings.py) has a straight bottom, so it creates the tiniest gap. Is there a way we can straighten just the top of each code block so theres no longer a gap and it blends into the file name above?

What exactly should be updated?

The CSS of the docs site.

Additional context

No response