This would be fine if it were only one or two, but tragically, there are a lot the red highlights are properties that are visually ineffective but appear relevant in Chrome and you can see that its pushed the relevant properties in green to the bottom of the fold.
As we observed in needfinding, when relevant code was pushed below the fold, it was hard for novices to find
These properties exist for a few reasons. Production webpages often use styleguides
But even if you were to remove all the ineffective properties