CSS Pro

About CSS Pro

CSS Pro is a browser extension that turns any live website into a visual CSS editor and generates the corresponding code. It runs on the page itself with no library import, plugin or code change required, and unlike browser devtools it shows only the CSS actually applied to the selected element rather than the full cascade of inherited and overridden rules. Values are adjusted visually and update in real time: spacing, typography with local, system and custom fonts, colours with one-click lighten/darken and format conversion, and a background editor the vendor describes as unusually complete. Unit conversion between px, %, em, rem and calc is a single click. Text content can be edited directly on the page for copy testing, new elements can be added, and elements can be moved around to try alternative layouts. Media queries and interactive pseudo-classes such as :hover and :active can be toggled and edited, which is the part most visual editors omit. An AI assistant on the top tier runs on frontier models and has full DOM context, so it can be asked to make a CSS change, explain an error or debug a rule — and it shows exactly what it changed with apply and undo controls rather than silently rewriting. Every edit is tracked and can be exported, copied, or shared as a link with a before/after toggle so a developer can copy the resulting CSS directly. Chrome, Firefox and Safari are supported.

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