# CSS Hover Effects — Underlines, Lifts and Fills

> Generate a hover effect that animates cleanly, with the reduced-motion guard included.

Every effect here animates only transform and opacity, which the browser composites without laying out or repainting — the difference between a smooth hover and a janky one is almost always which property you animated. Each recipe also fires on :focus-visible as well as :hover, because a hover-only affordance does not exist for keyboard users and does not exist on touch at all. The sliding underline uses scaleX with a shifting transform-origin so it enters from one side and leaves from the other.

**URL:** https://convertto.tech/t/css-hover-effects-generator
**Category:** CSS Generators (https://convertto.tech/c/css-generators)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Choose the effect.
2. Pick the accent.
3. Set the duration.
4. Set the distance.
5. The result appears immediately — copy or download it.

## FAQ

### Why animate transform instead of width or top?

Width and top change the layout, so the browser recalculates geometry and repaints every frame. Transform and opacity are handled by the compositor and skip both steps. The same-looking effect can be an order of magnitude cheaper.

### What happens to hover effects on a phone?

There is no hover, so a touch either triggers it on tap and leaves it stuck, or skips it. Never put information behind hover alone. Including :focus-visible at least makes the effect reachable by keyboard.

### Why does the underline slide in from one side and out the other?

The transform-origin switches between the resting and hovered states. Scaling from right at rest and from left on hover means the growth and the retreat run in the same direction, which reads as a single sweep rather than a bounce.

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