Shorter, randomized names can slightly reduce the overall size of the CSS file sent to the user's browser.
Elements that aren't native tags but need to behave like them. .qzQEEvZG { vertical-align:top; cursor: pointe...
Modern frameworks often use a process called "scoping" to manage styles. Instead of naming a class .header-button , a build tool generates a string like .qzQEEvZG . This offers several advantages: Shorter, randomized names can slightly reduce the overall