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Free online CSS viewer. Open .css stylesheets directly in your browser without uploading them.
.css
Tool usage guide
.css (Cascading Style Sheets) describes the presentation of HTML documents, controlling layout, colors, typography, and responsiveness. Modern CSS includes custom properties (variables), flexbox, grid, and animations, and is maintained as a standard by the W3C.
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Tool usage guide
Title
CSS Viewer
Description
Free online CSS viewer. Open .css stylesheets directly in your browser without uploading them.
This CSS viewer renders stylesheet source locally in your browser. Cascading Style Sheets control how web pages look, from colors and spacing to responsive layouts and animations. Pick a sample or choose your own .css file to inspect selectors, custom properties, and rules with highlighting.
Yes. It runs in your browser for free and needs no registration or installation.
No. Files opened from your device stay on your device. Only public sample files come from the server.
No. The viewer shows the stylesheet source with highlighting rather than a live rendered preview.