Fix Alert component layout

[YUCLing]

Fixes #0000

Changes proposed in this pull request:
Adds gap for .Alert-container in admin styles.

This change improves the readability of the alert.

Reviewers should focus on:

Screenshot
Before

After

QA

Necessity

• Has the problem that is being solved here been clearly explained?
• If applicable, have various options for solving this problem been considered?
• For core PRs, does this need to be in core, or could it be in an extension?
• Are we willing to maintain this for years / potentially forever?

Confirmed

• Frontend changes: tested on a local Flarum installation.
• Backend changes: tests are green (run composer test).
• Core developer confirmed locally this works as intended.
• Tests have been added, or are not appropriate here.

Required changes:

• Related documentation PR: (Remove if irrelevant)
• Related core extension PRs: (Remove if irrelevant)

[SychO9]

Thanks for the PR!

This is what it actually should look like:

looks like I broke by adding flex display on the alert container while trying to fix this:

Best way to fix this is to wrap Alert-title and Alert-body divs into a Alert-content div.

[YUCLing]

Best way to fix this is to wrap Alert-title and Alert-body divs into a Alert-content div.

Fixed it. See if it looks good to you.

[SychO9]

Thanks!