hey can i know how you customized your itch.io page like that?
Part of me thinks the author used a lot of CSS animations? I know you can specify a pattern of points and their durations. I'm not sure how complicated it is to compose though!
you have to email them and ask them to enable custom css... then it's all just a bunch of css animations or however you customize the page. i haven't checked if they have an official place that tells you about all the different page elements/classes but you can just use the dev toolbar to go through the page and find the names to all the id's and classes (it's super basic, just plain simple css, nothing fancy). the fire is actually the header set to the bottom of the page with the index changed... just stuff like that. also lol i found out that you can keep uploading images through the background image upload, and save the url to those images, and then use those images in the css (don't have to keep them as a background, just use that part as a way of uploading more images to use in your css)... at least that seems to work.