Files

These look like custom CSS properties (CSS variables) used by a framework or component to control an element’s animation. Breakdown:

-sd-animation: sd-fadeIn;
- Purpose: Names the animation to run. Here “sd-fadeIn” likely maps to a keyframes animation that fades the element in.
–sd-duration: 0ms;
- Purpose: Controls animation length. 0ms means the animation runs instantly (no visible transition).
–sd-easing: ease-in;
- Purpose: Sets the timing function (animation curve). ease-in starts slowly and speeds up.

How they’re typically used:

Defined on an element or root and consumed by component CSS or JS:

.component {animation-name: var(–sd-animation);  animation-duration: var(–sd-duration);  animation-timing-function: var(–sd-easing);}

A framework might use a prefix (–sd- or -sd-) for scoped variables. Note -sd-animation (single leading hyphen) is valid as a custom property name but uncommon; standard custom properties start with –.

Practical notes:

If you want a visible fade-in, set –sd-duration to a positive value (e.g., 300ms) and ensure sd-fadeIn keyframes exist:

@keyframes sd-fadeIn {  from { opacity: 0; transform: translateY(4px); }  to   { opacity: 1; transform: translateY(0); }}

To override only one aspect, set the variable where needed; CSS variables cascade.
Browser support: CSS custom properties and animation properties are widely supported in modern browsers.

If you want, I can:

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