I am currently using react and bootstrap for developing a website and came across this template of Wix: https://www.wix.com/website-template/view/html/1896?siteId=c54249f0-9878-4464-9dc0-5cc938a097e4&metaSiteId=2f5a38ee-e1bf-4a2d-a169-8e9670dd4cb0&originUrl=https%3A%2F%2Fwww.wix.com%2Fwebsite%2Ftemplates%2Fhtml%2Flanding-pages%2Fcoming-soon&tpClick=view_button

How to develop such transitions, like fading when pulled down?

https://preview.redd.it/3mb66fm6ish51.png?width=1920&format=png&auto=webp&s=60d69bfe0e2e7d39fd3f87ad705fa0b51c7d64dd