CSS Grid Layout Builder
Generate fixed columns or auto-fitting CSS card grids with native layout, spacing and row-size previews.
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How to use CSS Grid Layout Builder
Build an explicit repeated column grid or let the browser choose responsive track counts from a minimum card width. Compare auto-fit with auto-fill using actual grid placement rather than an approximate diagram.
- Choose the bounded settings and select Run tool.
- Inspect the native preview and generated CSS. Smaller screens can scroll inside a fixed-size layout preview.
- Copy or download the CSS, then adapt selectors and test real content in your own project.
Good to know
- Only a uniform card grid is generated. Subgrid, named areas, masonry, item spanning and content-sized rows are outside this builder.
- Fixed column count is used only in fixed mode; minimum track width is used only in auto-fit/auto-fill. The min(100%, minimum) expression prevents one minimum track exceeding its container.
- No HTML or CSS input is executed. Only known properties, enumerated choices and bounded numbers reach this preview. No data leaves this tab.
Common questions
Is the generated CSS ready for every production page?
Review actual content, fixed row-height clipping, media behavior and browser support. Add your own card markup and selectors.
Does the preview upload information or import a framework?
No. It uses native browser rendering with original local demonstration content. It makes no external requests, saves no history and requires no framework.
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