So far I have custom CSS for all of my normal site pages that has been working properly and now I am trying to also use the CSS for other pages (Site Contents, any document libraries, lists, folders, etc). I am unsure how to get the CSS to apply to these pages as they seem to only use the default SharePoint CSS. Any tips on how to go about this?
For the other pages I just changed the order of which CSS files should be loaded when by adding CSSRegistration links in the Master page. Is there a way to add a Registration link that will only apply it to certain site content pages instead of all of them?
So after the last answer I know I can use JS for this and I am fairly certain I can write the code for that as well. The part I need help with the most is how to implement the JS. Site Contents has a folder for JS and I was wondering if I need to put it in there or if it would be directly on the Masterpage. any help or references you can point me to would be amazing.