Quick CSS cleanup

[validbeck]

Internal Notes for Reviewers

• Reverted the training/training.qmd (training landing page) top nav to white for contrast with the special hero banner
• Fixed the disappearing footer hover links
• Adjusted the video border convention

Old	New

[github-actions]

PR Summary

This pull request introduces several style updates across the project to ensure consistency in the visual appearance of embedded elements and navigation links. The changes include:

1. Border Color Update: The border color for embedded iframes and video elements has been changed from #DE257E to #196972 in multiple files, including conventions.qmd, release-notes.qmd, and styles.css.

2. Navigation Link Styles: Adjustments have been made to the CSS selectors for navigation links to include a new hover style for footer links, ensuring they change color to #1A202C without text decoration.

3. Navbar Background Color: A new inline style has been added to training.qmd to set the navbar background color to white, overriding any existing styles.

These changes aim to provide a more cohesive and visually appealing user interface across the site.

Test Suggestions

• Verify that the border color of iframes and video elements is updated to #196972 across all affected pages.
• Check that the hover effect on footer navigation links changes the text color to #1A202C without any text decoration.
• Ensure that the navbar background color is white on the training page and that it overrides any other styles.
• Test the site on different browsers to ensure consistent styling and appearance.
• Check for any visual regressions on pages where styles have been modified.

[nrichers]

LGTM! Thank you, @validbeck. 🙇