Sure! I use Webflow to build the website, so I can share the HTML and CSS via this link: https://preview.webflow.com/preview/expandable-showcase?utm_medium=preview_link&utm_source=designer&utm_content=expandable-showcase&preview=7ec2f683b9be87859fbeda29dd265e29&workflow=preview, on the staging domain you can see how the interaction is currently working (https://expandable-showcase.webflow.io/).
I want the animation to go back to it's original state at the end of home header section. I hope the links above give you a better understanding of the HTML and CSS, if not, please let me know!