CSS Grid & Flexbox Visual Layout Code
Visually design responsive CSS Grid and Flexbox layouts. Adjust columns, rows, gap, alignment, and instantly export production-ready CSS, HTML.
Container Properties
Visual Container Canvas
/* Calculating... */About this tool
How to use it
- Toggle between CSS Grid (for two-dimensional row and column grids) and CSS Flexbox (for one-dimensional row or column flows).
- Select a pre-built layout template (3-Column Grid, 12-Column Dashboard, Space-Between Navigation, Centered Hero).
- Adjust columns, rows, gap spacing (px), alignment (justify-content, align-items, justify-items).
- Add or remove child item boxes to see how the layout wraps and adapts in real-time.
- Switch between CSS, HTML, and Tailwind CSS code tabs and click 'Copy Code'.
Why it matters
Mastering modern CSS layout systems (Grid and Flexbox) is the core of responsive frontend web development. Remembering the nuances between `justify-content` vs `justify-items` and `align-items` vs `align-content` across 1D and 2D axis directions causes frequent layout bugs. A visual builder eliminates guesswork.
When to use it
Use this tool when scaffolding responsive page layouts, creating dashboard grids, navbar header alignments, media cards, or converting Figma designs into clean CSS.
Good to know
Use CSS Grid when you need structured rows AND columns (2-dimensional layout). Use CSS Flexbox when arranging items along a single axis (either horizontally in a row or vertically in a column).
Common questions
What is the difference between CSS Grid and Flexbox?
Flexbox is designed for one-dimensional layouts (arranging elements in either a row OR a column). CSS Grid is designed for two-dimensional layouts (controlling rows AND columns simultaneously in a structured grid).
What is repeat(3, 1fr) in CSS Grid?
`repeat(3, 1fr)` defines 3 equal columns where `1fr` represents one fractional unit of the container's available free space. This automatically shares available width evenly across all columns.
What does justify-content: space-between do?
In Flexbox, `space-between` distributes items evenly along the main axis. The first item aligns to the start, the last item aligns to the end, and the remaining items share equal spacing between them. It is ideal for site navigation headers.
How does gap work in modern CSS?
The `gap` property (previously `grid-gap`) specifies the gutters between rows and columns. It works universally in both modern CSS Grid and Flexbox, eliminating the need for negative margins or sibling selectors.
Can I copy Tailwind CSS classes?
Yes! Switch to the 'Tailwind CSS' tab to get equivalent utility classes (such as `grid grid-cols-3 gap-4 items-center` or `flex flex-row justify-between items-center`).