Beginner’s

These look like CSS custom properties used to control a reusable animation. Brief breakdown:

  • -sd-animation: sd-fadeIn;

    • Likely a custom shorthand property indicating which animation to apply (here, “sd-fadeIn”).
  • –sd-duration: 0ms;

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

    • Timing function controlling acceleration; “ease-in” starts slowly and speeds up.

Notes and quick usage example:

  • If the duration is 0ms the easing has no visual effect; set a positive duration (e.g., 300ms) to see the fade.
  • The animation name (sd-fadeIn) must correspond to a keyframes rule or a CSS animation implementation that reads these custom properties.

Example CSS pattern:

css
.element {–sd-duration: 300ms;  –sd-easing: ease-in;  -sd-animation: sd-fadeIn;  animation-name: var(-sd-animation);  animation-duration: var(–sd-duration);  animation-timing-function: var(–sd-easing);  animation-fill-mode: both;}
@keyframes sd-fadeIn {  from { opacity: 0; transform: translateY(8px); }  to   { opacity: 1; transform: translateY(0); }}

Adjust duration and easing as needed.

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