### Steps to reproduce

1. Be on dark mode

2. Login as a user with permissions to edit meetings

3. Go to any meeting

4. Trigger the reload banner Begin of the insertion

### Steps to reproduce (the storage banner issue)

5. Login as an admin

6. Be on dark mode

7. Go Administration > Files

8. Delete an existing storageEnd of the insertion


### What is the buggy behavior?

Banner is transparent and visually overlapping

### What is the expected behavior?

1. Banner is not transparent


### Screenshots and other files

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/199047/content">

Begin of the insertion<figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/199319/content"></div></figure>

###

End of the insertion ### Environment information

**OpenProject version**

_unreleased/dev_

**Browser**

* [ ] Chrome
* [x] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows
* [ ] Mac OS X
* [x] Mobile iOS
* [x] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)