-sd-animation: sd-fadeIn; –sd-duration: 250ms; –sd-easing: ease-in;

You’re referencing a utility-style rule: py-1 [&>p]:inline. This looks like a Tailwind CSS (or Tailwind-like) shorthand combining a spacing utility with a scoped child selector. Explanation:

• py-1 — sets vertical padding (padding-top and padding-bottom) to the utility value 1 (usually 0.25rem in Tailwind by default).
• [&>p]:inline — an arbitrary variant using the parent selector (&) to target direct child

  elements and apply the inline utility to them (making those

  elements display: inline).

Effectively, applied to an element, it:

• Gives that element vertical padding of 0.25rem.
• Makes any direct child

  elements display inline.

Example (conceptual HTML with Tailwind JIT arbitrary variant support):

Notes:

• This requires a build setup that supports Tailwind’s arbitrary variants (JIT mode) or a framework that understands the same syntax.
• The exact size of py-1 depends on your Tailwind config; defaults are 0.25rem for 1.
• Browser support: generated CSS is regular selectors and works in browsers; ensure your tooling escapes the selector properly.