Suggestions

[CST1229]

1. Don't set the font at all in the share popup. It'll just use Scratch's defaults, so no need to import anything either, and the UI will always be consistent with Scratch. Also, the <font> element is deprecated in HTML.
2. Don't set overflow: scroll; in the user list in the share popup. It makes ugly scrollbars always appear. Instead, set overflow: auto; to only make scrollbars appear when needed.
3. Make the profile pictures squares or rounded squares instead of circles, to be consistent with Scratch.
4. Things called classes, spans, divs and <style></style> tags exist in HTML, you know...
5. Also, it's a bad idea to have multiple elements with the same ID.
   Yes, I'm too lazy to fork this and make a PR.

[MeechaPooch]

These are really awesome helpful suggestions thank you!! Ill implement them tomorrow; heres the discord if you want to join it https://discord.gg/Th8dhGTE