Here are some cool CSS scroll effects examples.
Dual Color Text Scroll Effect
Dev: Raymond Lopez
Scroll Effect
Dev: spglco
Scroll Based Animation
Dev: lmgonzalves
Floaty Bubbles
Dev: Will Boyd
Horizontal Infinite “Out of Synch” Scroll Effect
Dev: Julien Lejeune
Skew Scrolling Effect ▲
Dev: Dronca Raul
CSS Scroll Reveal Sections
Dev: Ryan Mulligan
Pure CSS Background Image Scroll Effect
Dev: carpe numidium
Floaty Bubbles
Dev: Will Boyd
Skewed One Page Scroll
Dev: Nikolay Talanov
Expanding Diagonal Background
Dev: Derek Palladino
Page Scroll Effects
Dev: Steve
css scroll effect
Dev: Connor
Home Page
Dev: Destiny
CSS scroll-behavior, scroll-snap-type & mix-blend-mode
Dev: Andrej Sharapov
Full bleed banner demo
Dev: Ana Tudor
12 nth Selectors
Dev: Gabriele Corti
Overlapping sections only CSS
Dev: Henry Zarza
Knockout Text Scroll Reveal (Final)
Dev: Blake Eric
CSS Fixed Conic Fill
Dev: Adam Argyle
Stacking Cards, Final Version
Dev: Bramus