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How it works
- Flexbox lays out items along a single axis (a row or a column) — best for navbars, toolbars, and one-dimensional arrangements.
- CSS Grid lays out items in two dimensions at once (rows and columns) — best for page layouts and card grids.
align-contentonly has a visible effect in Flexbox when items wrap onto multiple lines — set Wrap to "wrap" and add enough items to see it.- The preview shows real boxes using your settings; "Copy HTML" gives you matching markup to pair with the CSS.
Visually build common CSS — backgrounds, borders, shadows, transforms and more — and copy clean, production-ready code. Live preview shows exactly what you'll get.
Frequently asked questions
What CSS can I generate?
Common visual properties such as backgrounds and gradients, borders and radius, shadows, and transforms, each with a live preview so you can dial in the look before copying.
Is the generated CSS optimised?
The output is clean and minimal — just the properties you changed — so you can paste it into your stylesheet without cleanup.
Will it work across browsers?
The generated properties are all widely supported in modern browsers. Where a newer feature is used, test in your target browsers as usual.
Can I fine-tune values by hand?
Yes — use the controls to get close, then edit the copied CSS directly for pixel-perfect values.