ZeroServer.tools

CSS Container Query Generator

Generate CSS container queries (@container) for component-level responsive design.

Container Setup

Container name

Container type

Use named container

Breakpoints (min-width)

Breakpoint 1

Breakpoint 2

Breakpoint 3

CSS applied at each breakpoint

These styles are applied inside each @container block.

Generated CSS

/* Container setup */
.card-container {
  container-type: inline-size;
  container-name: card;
}

/* Breakpoint: ≥400px */
@container card (min-width: 400px) {
  .card {
    flex-direction: column;
  }
}

/* Breakpoint: ≥700px */
@container card (min-width: 700px) {
  .card {
    flex-direction: column;
  }
}

/* Breakpoint: ≥1000px */
@container card (min-width: 1000px) {
  .card {
    flex-direction: column;
  }
}

CSS Container Query Generator — build @container rules for responsive components

CSS container queries let components respond to the size of their own container rather than the viewport, enabling truly reusable responsive components. The container-type: inline-sizedeclaration on the wrapper enables queries based on the container's inline (horizontal) size. Named containers (container-name) let you target a specific ancestor when multiple containers are nested. Container queries are supported in all modern browsers and are the preferred approach for design systems and component libraries where components are embedded in varying layout contexts.

Private & free — this tool runs entirely in your browser.