: This aligns the element (often an inline-block or table cell) to the top of its parent container.

: This is a class selector . The random-looking name suggests it was generated by a CSS-in-JS library (like styled-components) or a minifier to save space and avoid naming conflicts.

To help you find exactly where this is from or how to use it, tell me: Did you find this in a ? Are you trying to override this style on a specific site?