.y47qbqv2 { Vertical-align:top; Cursor: Pointe... Link

In the specific snippet you provided, the CSS defines how a particular element behaves on the screen:

: By frequently changing these class names, platforms make it harder for third-party tools to "target" specific parts of the page (like ads or specific data points) for removal or data harvesting. .y47QBqv2 { vertical-align:top; cursor: pointe...

Because these class names are generated by compilers (like Closure Compiler), they don't have "semantic" names (like .header-top ). Instead, they serve as unique identifiers for specific styling rules that can change every time the site's code is redeployed. The Breakdown of Your Snippet In the specific snippet you provided, the CSS