CSS

The technical term Cumulative Layout Shift is better known as: "when the page you're on jumps around as it's loading, and it annoys you."

Parallax scrolling has been popular for some years now. Watch the nearer clouds scroll faster than the ones in the distance! But the technique has its uses.

The performance of your site – the speed with which it loads and responds to user actions – is crucial to its success. There's a lot you can do to improve this.