CSS Feature Availability Matrix

What CSS features and browser compatibility does this matrix cover?

The matrix covers CSS1 through modern CSS with features like Flexbox, Grid, Container Queries, :has() selector, Custom Properties, animations, and more. Includes comprehensive browser support for Chrome, Firefox, Safari, Edge with fallback strategies for older browsers.

How do I use this tool for CSS modernization planning?

Select your current CSS level and target specification, then generate a modernization plan. The tool shows new layout capabilities, modern selectors, responsive features, and provides step-by-step guidance with fallback strategies for cross-browser compatibility.

Which browsers and CSS specifications are supported?

The matrix supports all major browsers (Chrome, Firefox, Safari, Edge) with specific version requirements. Covers CSS1, CSS2, CSS3, CSS4, and modern CSS specifications including layout modules, selectors level 4, and cutting-edge features.

How accurate is the CSS browser compatibility information?

Browser support data is based on official W3C specifications, MDN documentation, and Can I Use database. Each feature includes specific browser version requirements, fallback strategies, and performance considerations for production use.

Can I export CSS compatibility data and modernization plans?

Yes! Export options include HTML tables for documentation, CSV data for analysis, JSON for integration, copyable text matrices, and detailed browser compatibility reports with fallback strategies. Perfect for team planning and CSS architecture decisions.