AI & the web
CSS
The language used to describe how web content should look and adapt to different displays.
In everyday use
CSS changes a page from two columns on a laptop to one column on a phone.
What to keep in mind
A visual change alone does not guarantee that the page remains accessible.
Also searched as: Cascading Style Sheets
Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
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