CSS Playground
UI ToolsEdit HTML and CSS in split panes and see a live rendered preview instantly. Experiment with layouts, animations, and styles in a zero-install browser-based CSS sandbox.
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About CSS Playground
The CSS Playground provides separate HTML and CSS editor panes plus a live preview iframe. Tweak selectors, properties, and animations and see the result rendered in real time. Perfect for experimenting with modern CSS features like grid, flexbox, custom properties, and animations.
Features
- ✓Separate HTML and CSS editor panes with syntax highlighting
- ✓Live preview iframe updates as you type (Auto-run mode)
- ✓Manual Run button to apply changes on demand
- ✓Reset button restores the built-in starter template
- ✓Supports any CSS modern features: grid, flexbox, variables, animations
- ✓Sandboxed preview keeps your host page isolated
Common Use Cases
- Experimenting with CSS layout techniques like grid and flexbox
- Testing CSS animations and transitions
- Creating a minimal CSS reproduction of a styling bug
- Learning and exploring new CSS properties interactively
- Prototyping component styles before adding to a project
Frequently Asked Questions
QCan I add external CSS frameworks like Tailwind or Bootstrap?
Yes — add a <link> tag in the HTML pane pointing to a CDN URL to load any external stylesheet.
QCan I write JavaScript in the CSS Playground?
Yes, add a <script> tag in the HTML pane. For a dedicated JavaScript console experience, use the JavaScript Playground tool.
QDoes the preview update automatically?
Yes, with Auto-run enabled the preview refreshes on every keystroke. Disable it and click Run to apply changes manually.