CSS Layout Tools

Flexbox and CSS Grid are the two primary layout methods in modern CSS. Flexbox excels at one-dimensional layouts — aligning items along a single row or column. CSS Grid handles two-dimensional layouts where you need control over both rows and columns. Most production websites use both: Grid for page-level structure and Flexbox for component-level alignment. The tools on this page let you visually build flexbox layouts and shape elements with border-radius, generating production-ready CSS.

Flexbox with `flex-wrap: wrap` and percentage-based or `min-width` values on flex items creates naturally responsive layouts. Set items to `flex: 1 1 300px` to let them grow to fill space but wrap to a new row when they would shrink below 300px. The `gap` property adds consistent spacing regardless of how many items fit per row. Our Flexbox Generator lets you experiment with these values visually.

Use `border-radius` for standard rounded corners, pills, and circles — it is widely supported, performant, and works with borders and shadows. Use `clip-path` when you need non-rectangular shapes like polygons, custom curves, or cutouts. `border-radius` also supports elliptical corners via the `/` syntax (e.g., `border-radius: 50% / 30%`), which covers most organic shapes without the complexity of clip-path.

`justify-content` distributes items along the main axis (horizontal in a row layout, vertical in a column layout). `align-items` aligns items along the cross axis (the perpendicular direction). For example, in a `flex-direction: row` container, `justify-content: center` centers items horizontally while `align-items: center` centers them vertically. Combined, they achieve perfect centering.