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CSS grid generator

Lay out a CSS grid by typing track lists or painting named areas, then copy the container CSS, per-area rules, and an HTML skeleton.
Brush······grid-template-areasOne row per line; painting keeps this text in sync

The preview is your browser's own grid engine fed the exact emitted values, so what you see is what ships. Validation refuses what a browser would silently drop: template-areas rows with different cell counts, an area that never forms a rectangle, and names that are not usable identifiers. Warnings call out anything the browser resolves on its own: implicit tracks when areas outnumber declared columns, and the fact that auto-fit and auto-fill decide their count at render time. Nothing about your layout leaves the tab.
Options

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