Web Tools
CSS Container Query Generator
Generate CSS container queries with proper syntax. Configure container definitions with type and name, build @container rules with size conditions, combinators, and target selectors. Preview full CSS output with plain-English explanations. Runs entirely in your browser — your data never leaves your machine.
css container-queries responsive layout generator
Published May 31, 2026
All interactive tools run entirely in your browser. Your data never leaves your device.
How It Works
Define a container element with its type (inline-size, size, or normal) and an optional name. Then build @container query rules with size conditions, target selectors, and CSS declarations. The tool generates valid CSS with plain-English explanations.
Features
- 3 container types: inline-size, size, normal
- Named containers: optional container-name for targeted queries
- 6 condition properties: min-width, max-width, min-height, max-height, width, height
- 3 units: px, em, rem
- Multiple conditions: combine with AND or OR logic
- Custom declarations: write any CSS for the target selector
- 5 examples: responsive card, sidebar toggle, nav stack, font scaling, grid layout
- Explanation: plain-English description of generated CSS
- Private: all computation runs in your browser — no data transmitted
Use Cases
- Building responsive components that adapt to their container size
- Migrating from media queries to container queries
- Learning CSS container query syntax
- Prototyping component-level responsive designs
- Generating boilerplate for container query patterns