Forest Parallax is a modern scrolling animation that demonstrates how to create a depth illusion using only HTML, CSS, and JavaScript — no frameworks or external libraries involved.
The page includes layered visuals: distant mountains, multiple tree levels, and birds flying in the foreground. Each element moves at a different speed, making the scene feel immersive.
The project uses scroll-based motion, calculated dynamically based on your screen size. The effect stays consistent across large desktops and smaller mobile devices thanks to adaptive scaling logic.
To ensure smooth performance, the animations are optimized using
requestAnimationFrame. This method aligns layer
movements with the browser’s refresh cycle, preventing lags or
jittery transitions.
Each forest layer is built using a
<div> element with a unique background image.
The transformation logic includes translate3d and
scale(), making each layer not only move but also
subtly grow or shrink to enhance the illusion of depth.
Upon page load, a soft animation is triggered: trees slide in from below, and birds fly in from the sides. This creates a welcoming entrance effect and makes the interface feel alive from the very beginning.
The design is fully responsive. All measurements are made using relative units like percentages and viewport values. The layers keep their proportions and behavior on any device size or screen ratio.
This parallax effect can be reused in portfolios, landing pages, or storytelling sites. It’s lightweight, educational, and a good starting point for experimenting with scroll-based interactivity.
The project follows a simple and clear file structure, separating HTML, CSS, JavaScript, and images into dedicated folders. It's easy to clone, edit, and expand.
💻 Source Code: GitHub Repository
Enjoy the scroll! 🌲