I noticed two issues:
1. Images get a little bit blurry in <cover> setting, even if no upscaling should be necessary.
Screenshot of website vs. original image, screen size is 1920px wide.
https://www.danielbollinger.de/projekte ... senburger/
https://www.danielbollinger.de/content/ ... he-003.jpg
2. When using <fixed>, intro image jumps after accessing site from parent site, but not when accessing site directly.
Parent site: https://www.danielbollinger.de/projekte ... otografie/ -> click on first project to see the jump.
Mac OS 12.3, Firefox 100.0