CSS

CSS (Cascading Style Sheets) is the presentation layer of the World Wide Web, a declarative language that separates how a document looks from what it means. Designed to rescue HTML from the tag-soup hell of presentational markup, CSS introduced the revolutionary idea that structure and style could be authored independently — but the revolution was incomplete. CSS is a battleground between browser vendors, a compatibility nightmare that has consumed billions of developer hours, and a standard that is still, three decades later, incapable of expressing layout concepts that print designers took for granted. The cascade itself — the algorithm that resolves conflicting style rules — is a microcosm of the web's power structure: the user's preferences matter least, the author's stylesheet matters more, and the browser's default styles matter most. CSS did not liberate the web from visual chaos; it replaced one form of chaos with another, more bureaucratic one.