Enhance alert/callout styles for various states

[st3phhays]

Checklist

• I have verified this is the correct repository for opening this issue.
• I have verified no other issues exist related to my request.

Is Your Feature Request Related To A Problem? Please describe.

On the various alert/callout state, like callout-warning & callout-danger, styles inside the alert should follow the theme too. For instance, one those alert types, <hr> lines are still blue, but they should likely be the solid matching color.

Describe The Solution. Why is it needed?

Ensure all styles inside callouts match that corresponding level. For instance, on the callout-warning, and <hr> elements should likely be a solid yellow, or possibly black (currently blue).

Additional Context

Related Issues

No response