So many buttons in GitHub Discussions are wrongly darkened

[Geeyun-JY3]

So many buttons in GitHub Discussions are wrongly darkened.

• Browser: Chromium 102.0.5005.167
• Operating System: Windows 10
• Link to page with the issue:
  1. https://github.com/community/community/discussions
  2. https://github.com/community/community/discussions/new/choose
  3. https://github.com/community/community/discussions/new?category=discussions
• Screenshot:
  1. New discussion button in https://github.com/community/community/discussions:
     
  2. Get started button(s) in https://github.com/community/community/discussions/new/choose:
     
  3. Start discussion button in a Start a new discussion page:
     
  4. Comment button in any discussion while something has been entered in the comment box: