CSS Overscroll Behavior Generator
Build overscroll-behavior rules for drawers, modals, and nested scrolling panels.
What the CSS Overscroll Behavior does
Build overscroll-behavior rules for drawers, modals, and nested scrolling panels. A mobile filter drawer can stop scroll chaining so the page behind it does not move while the drawer scrolls Adjust the controls and the preview updates immediately, so you can dial in exactly what you want and copy the result straight into your project — no build step and no account.
One thing to keep in mind: Overscroll rules affect scroll chaining, not whether the element itself can overflow.
Private and in your browser
Everything runs locally in your browser. Your input is never uploaded, so the tool stays fast and works offline, and the copy and download buttons always use the current result shown in the output panel.
Frequently Asked Questions
What does the CSS Overscroll Behavior do?
Build overscroll-behavior rules for drawers, modals, and nested scrolling panels. A mobile filter drawer can stop scroll chaining so the page behind it does not move while the drawer scrolls.
What should I keep in mind?
Overscroll rules affect scroll chaining, not whether the element itself can overflow
Does it upload my input?
No. The CSS Overscroll Behavior runs entirely in your browser — your input is never uploaded, and it keeps working offline once the page has loaded.
Practical utilities for front-end design and implementation work.