dataprismcore5.cyou

Step-by-Step

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These are CSS custom properties (variables) used to control a component animation. Breakdown:

  • -sd-animation: sd-fadeIn;
    • Purpose: names the animation to apply (here, a fade-in preset called “sd-fadeIn”). The actual keyframes must be defined elsewhere (e.g., @keyframes sd-fadeIn).
  • –sd-duration: 250ms;
    • Purpose: animation duration — how long one run takes (250 milliseconds).
  • –sd-easing: ease-in;
    • Purpose: timing function — controls acceleration of the animation (starts slowly, speeds up).

How they’re typically used:

  • Defined on an element (or :root) as custom properties:
    • –sd-animation: sd-fadeIn;
    • –sd-duration: 250ms;
    • –sd-easing: ease-in;
  • Then referenced in animation-related CSS:
    • animation-name: var(–sd-animation);
    • animation-duration: var(–sd-duration);
    • animation-timing-function: var(–sd-easing);
    • animation-fill-mode / iteration-count can also be set.

Example:

css
.element {–sd-animation: sd-fadeIn;  –sd-duration: 250ms;  –sd-easing: ease-in;
  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(6px); }  to   { opacity: 1; transform: translateY(0); }}

Notes:

  • Names starting with a single dash (e.g., -sd-animation) are allowed but nonstandard convention; standard custom properties must start with two dashes (–) to be used with var(). Using -sd-animation won’t work with var() unless you reference it exactly; better use –sd-animation.
  • Ensure keyframes exist for the animation-name value.
  • You can override these properties per element to control timing/easing centrally.

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