Are you trying to or just curious about what the code does?

: Ensuring a logo or text link is aligned to the top of a header bar.

: Aligning an icon or avatar to the top of a text-heavy card. How to Use It

: This aligns the element (or its content) to the top of its parent container. This is most commonly used for inline-block elements or table cells to keep text or images from "floating" in the middle of a row.

Do you have the ? (There might be more rules like display or padding that change how it behaves.)