Rich Text content animation

Hello! I’m working on a portfolio project for a client and am building all of the project pages through CMS. I’ve been working on figuring out how to get all of the correct content onto the correct pages using Rich Text, since it allows me to make the content on each page specific to the project (some have images and paragraphs, some are images only). One thing I haven’t been able to figure out though is if it’s possible or not to add basic animations to things inside of the Rich Text? In an ideal world, I’d love to have some type of universal animation applied to an all-up class like “All Paragraphs” or “All Image” that fades up each paragraph or each image inside of that rich text as you scroll down the page, just to make the content/storytelling feel a little more special and less blog-like. That doesn’t seem to be possible though as far as I can tell with everything I’ve tried. So I figured I’d reach out and see if anyone had any ideas or enlightenment on if something like that was even doable or not? I know you can add custom CSS inside of the Rich Text editor now, and I was wondering if something with that could maybe do the trick?

Here’s the Read-Only WIP site: