These look like CSS custom properties (CSS variables) used to control a small animation system. Explanation:
- –sd-animation: sd-fadeIn;
- Name of the animation to apply (likely maps to a keyframe or animation class called “sd-fadeIn”).
- –sd-duration: 250ms;
- Duration of the animation (250 milliseconds).
- –sd-easing: ease-in;
- Timing function controlling acceleration (starts slowly then speeds up).
How they might be used in CSS:
.element {animation-name: var(–sd-animation); animation-duration: var(–sd-duration); animation-timing-function: var(–sd-easing);}
/* example keyframes */@keyframes sd-fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); }}
Notes:
- Variables allow per-element customization without repeating rules.
- Ensure the referenced keyframes (sd-fadeIn) exist; otherwise animation won’t run.
- You can override per-element or via media queries for responsiveness.
- Use animation-fill-mode (e.g., forwards) if you want final state retained.
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