fix(landing): ui feedbacks

[olarclara]

What kind of change does this pull request introduce?

Closes CSB-1782.

What is the new behavior?

• Hover states for resources links;
• Feedback when copying to clipboard;
• Miscellaneous spacing adjustments;

Checklist

• Documentation
• Ready to be merged
  

[linear]

CSB-1782 UI feedbacks

• Add hover state and maybe change the icon to confirm that the text is on the clipboard.

• @marco Vincit Is there a hover state for these links?

• Can we use a syntax highlight for this component? Maybe the Sandpack itself can handle it

• On mobile devices, this component doesn't fit to the entire screen

• Can we distribute better these columns? There is more space between them, than around the blocks.

• Add some padding around these titles, in order to avoid it "touches" the screen boundaries