This document discusses different ways to style and design web pages using CSS: - CSS can be used to style content and is written in combination with HTML. It can be written inline, internally, or externally. - Inline CSS inserts style code directly into HTML tags and only affects that specific content. - Internal CSS writes style code in the <head> using <style> tags and applies styling to all instances of tags within the document. - External CSS defines styles in a separate .css file that is linked via the <link> tag, allowing uniform styling across an entire website.