dataprismcore3.sbs

Techniques

Written by

pw

in

These look like CSS custom properties and a (prefixed) property used to control a simple animation pattern. Brief explanations:

  • -sd-animation: sd-fadeIn;

    • Likely a custom (prefixed) property signaling which animation to apply; “sd-fadeIn” names the animation behavior (probably defined elsewhere as keyframes or a utility).
  • –sd-duration: 0ms;

    • CSS custom property holding the animation duration. 0ms means the animation runs instantly (no visible transition).
  • –sd-easing: ease-in;

    • CSS custom property for the timing function (easing) — “ease-in” starts slow then speeds up.

How they’re typically used

  • Define keyframes for the named animation (sd-fadeIn) and then reference the custom properties when setting animation shorthand or transition: 
    @keyframes sd-fadeIn {from { opacity: 0; transform: translateY(6px); }  to   { opacity: 1; transform: translateY(0); }}
.sd-animated {  animation-name: var(–sd-animation);  animation-duration: var(–sd-duration);  animation-timing-function: var(–sd-easing);  animation-fill-mode: both;}
  • With –sd-duration: 0ms, the element will jump to the final state immediately; set a positive duration (e.g., 250ms) for visible animation.

Notes and best practices

  • Use meaningful defaults (e.g., 200ms–400ms durations) and expose these vars for theming/components.
  • Prefer prefers-reduced-motion handling: set duration to 0ms when user requests reduced motion.
  • Ensure the named animation (sd-fadeIn) exists; otherwise animation-name: var(–sd-animation) does nothing.
  • Keep vendor prefixes only if supporting very old browsers.

If you want, I can:

  • Provide a complete example with CSS and HTML demonstrating sd-fadeIn and prefers-reduced-motion handling.

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