These look like CSS custom properties (CSS variables) used to control an animation system—likely a component or library convention where a variable prefix (here –sd-) configures animation behavior.
Quick breakdown:
- -sd-animation: sd-fadeIn;
- Specifies the animation name or preset to use. “sd-fadeIn” is likely a predefined keyframe or animation class that fades an element in.
- –sd-duration: 0ms;
- Sets the animation duration to 0 milliseconds, meaning the animation will not take time (instant effect). Use a value like 200ms, 300ms, or 1s for visible transitions.
- –sd-easing: ease-in;
- Sets the timing function that controls animation acceleration. “ease-in” starts slowly and speeds up. Alternatives: linear, ease-out, ease-in-out, cubic-bezier(…).
Usage notes:
- These are custom properties; they need to be referenced in actual animation/CSS rules, e.g.:
animation-name: var(–sd-animation);animation-duration: var(–sd-duration);animation-timing-function: var(–sd-easing); - If the library expects the prefix
-sd-(note the leading single hyphen), be consistent; most CSS custom properties start with–. A leading single hyphen (as in-sd-animation) is not a valid custom property name—use–sd-animationunless the system specifically parses-sd-*elsewhere (e.g., a JS API). - With duration 0ms, easing has no effect; set duration >0 to see easing.
- Ensure the animation keyframes (e.g., @keyframes sd-fadeIn) exist or the preset is provided by the framework.
If you want, I can:
- convert those into a complete CSS example,
- suggest sensible duration/easing defaults,
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