Linking CSS to HTML
Connect a stylesheet to your HTML page.
Step 1 of 4
HTML is structure, CSS is style
HTML creates the content and structure of a page. CSS controls how it looks — colors, sizes, spacing, fonts. They were intentionally made as separate languages because it lets you change the entire look of a website without touching the content. Sites like Twitter/X and YouTube use CSS to implement dark mode — the HTML stays exactly the same, only the CSS changes.
Think of it this way: Imagine redecorating a room: you don't rebuild the walls just to change the paint color. HTML is the structure (walls, rooms, doors) and CSS is the decoration (paint, furniture, lighting). Keeping them separate means you can redesign without rebuilding — exactly how real companies rebrand their websites.
Web Standard
Separation of concerns: HTML defines structure, CSS defines presentation. Keeping them in separate files means you can restyle an entire site by changing one CSS file.
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