Use ::-webkit-scrollbar pseudo-elements to style scrollbar parts like track and thumb for Chrome, Edge, and Safari. 2. Apply styles to specific containers like modals or sidebars using class selectors for targeted customization. 3. For Firefox, use scrollbar-width and scrollbar-color for basic styling, as it doesn’t support WebKit pseudo-elements. 4. Follow best practices by keeping designs subtle, ensuring accessibility contrast, testing across devices, and avoiding complete scrollbar hiding without alternative scroll cues. WebKit provides full control, Firefox allows limited styling, and for advanced features, JavaScript libraries are recommended, but simple CSS suffices for most polished UI needs.
Styling a scrollbar with CSS is useful when you want to customize the look of scrollbars on your website—especially on Windows or WebKit-based browsers like Chrome, Edge, and Safari. While Firefox has limited support, most customization works well in modern browsers using WebKit scrollbar pseudo-elements.

Here’s how to do it right:
1. Use WebKit Scrollbar Pseudo-Elements
Even though scrollbars aren’t part of the standard DOM, browsers like Chrome and Safari allow styling via special ::-webkit-scrollbar
pseudo-elements.

You can target different parts of the scrollbar:
/* The entire scrollbar */ ::-webkit-scrollbar { width: 12px; /* Vertical scrollbar width */ height: 12px; /* Horizontal scrollbar height */ } /* The track (background) */ ::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 10px; } /* The draggable scrolling handle */ ::-webkit-scrollbar-thumb { background: #888; border-radius: 10px; } /* On hover */ ::-webkit-scrollbar-thumb:hover { background: #555; }
? Note:
width
applies to vertical scrollbars, andheight
to horizontal ones (e.g., on<textarea>
or flex containers withflex-direction: row
).
2. Customize Scrollbar for Specific Elements
Don’t want to change every scrollbar on the page? Apply styles to a specific container:
.container::-webkit-scrollbar { width: 8px; } .container::-webkit-scrollbar-track { background: #eee; } .container::-webkit-scrollbar-thumb { background: #ccc; border-radius: 4px; }
Use this on modals, sidebars, or chat boxes where custom scroll behavior improves UX.
3. Cross-Browser Support (Limited)
- ? Chrome, Edge, Safari: Full support via
-webkit
prefixes. - ?? Firefox: Uses a different property:
scrollbar-width
andscrollbar-color
. - ? IE: No support.
For Firefox, use:
/* For the whole document or any element */ * { scrollbar-width: thin; /* or auto, none */ scrollbar-color: #888 #f1f1f1; /* thumb and track color */ }
This won’t give you full design control like WebKit, but it helps unify appearance across browsers.
4. Best Practices & Tips
- Keep it subtle: Overly thick or flashy scrollbars can distract users.
- Accessibility matters: Ensure contrast between thumb and track is sufficient.
- Test on different devices: Scrollbars may not appear at all on macOS (hidden by default until scrolling).
- Avoid hiding scrollbars completely unless you provide another way to scroll (e.g., touch/swipe).
Basically, WebKit gives you full control, Firefox offers basic color control, and that’s about it. If you need advanced cross-browser custom scrollbars (with animations, momentum, etc.), consider JavaScript libraries like SimpleBar or OverlayScrollbars.
But for most cases, a few lines of CSS are enough to make your UI feel polished.
The above is the detailed content of How to style a scrollbar in CSS?. For more information, please follow other related articles on the PHP Chinese website!

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