Adjust the controls to generate ready-to-paste CSS — the preview and code update live in your browser, with nothing uploaded.
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.
The Web originally had almost no design language
Early HTML focused on document structure. In 1994 Håkon Wium Lie proposed Cascading Style Sheets as the Web needed a way to separate presentation from document structure. CSS1 became a W3C Recommendation in 1996.
Why 'cascading' matters
CSS can receive styling rules from different sources. The cascade defines how competing rules are resolved, allowing browser defaults, site styles and other rule sources to work together.