HTML Link & Heading Extractor
About CSS Container Query Generator
The CSS Container Queries (`@container`) Builder generates modern container query rules (`container-type: inline-size`, `@container (min-width: 400px)`), allowing child components to adapt dynamically based on their parent container's width rather than the global browser viewport.
How to Use CSS Container Query Generator
Step 1
Define container name and container-type (`inline-size`).
Step 2
Set container query breakpoints and child style modifications.
Step 3
Resize the interactive preview container to verify responsive transitions.
Step 4
Click "Copy CSS".
Practical Use Cases for CSS Container Query Generator
Building Truly Modular UI Components
Design card components that automatically switch from vertical stacked layouts to horizontal multi-column layouts whenever placed in wide grid containers or sidebars.
Refactoring Media Queries into Component-Driven Container Queries
Decouple widget responsive behavior from viewport dimensions, enabling clean component reuse across multiple dashboard columns.
Input & Output Examples
Generating Responsive Card Container Query
Container Name: `card-wrapper`, Breakpoint: `450px`, Rule: Switch to horizontal layout
`.card-wrapper { container-type: inline-size; container-name: card; }\n@container card (min-width: 450px) { .card { flex-direction: row; } }`Key Features & Performance
- ✓Container types: `inline-size` (width-based), `size` (width and height), `normal` (style queries).
- ✓Supports Container Query Units: `cqw` (1% container width), `cqh`, `cqi` (inline), `cqb` (block), `cqmin`, `cqmax`.
- ✓Live interactive resizable container sandbox demonstrating dynamic component layout shifts.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy container query code.
Key Terminology & Definitions
CSS Container Queries (`@container`)
A CSS feature allowing styles to be applied to elements conditionally based on the size or styling of a designated ancestor container element.
Container Query Units (`cqw`, `cqi`)
Relative length units that represent percentages of a query container's inline size or block size.