Flexbox Generator: Build and Preview CSS Flex Layouts
The Flexbox Generator is a visual CSS flexbox builder for exploring container layouts. Choose the number of items, flex direction, justify-content, align-items, flex-wrap, and gap, then see the layout update live. Generate and copy the complete flex container declaration for use in a stylesheet, test, fixture, or seed data. Compare layout settings without assembling each declaration by hand.
The Flexbox Generator is a visual CSS flexbox builder that helps you configure and preview a flex container. Set the number of items, adjust the layout options, and see the items arrange themselves in a live preview. When the result looks right, generate and copy the full flex container declaration.
The available settings are direction, justify-content, align-items, flex-wrap, and gap, along with the number of items shown in the preview. These options control the flex container layout, while the preview gives you a visual way to compare combinations. The generated output is the complete flex container declaration, so you can copy it into your stylesheet or use it in tests, fixtures, and seed data.
CSS Flexbox describes how items are arranged within a container, while the live preview makes those layout choices easier to inspect. Use the generator when you want to explore container settings, compare how items are positioned, or prepare a declaration without assembling each property by hand.
The Flexbox Generator runs entirely in your browser. Your input is processed on your own device and is not uploaded, stored, or sent to a server. It has no server dependency, so after the page has loaded, it continues to work offline.
This tool is useful for developers and DevOps engineers creating layout examples, preparing test data, or checking flex container settings during development. Beginners can learn by changing options and observing the preview, while experienced developers can quickly generate and copy a complete declaration.
Step 1: Set the number of items you want in the preview. This lets you see how the flex container arranges multiple items.
Step 2: Choose the flex direction, justify-content, align-items, flex-wrap, and gap values for the container.
Step 3: Review the live item preview as you adjust the settings to see how the layout changes.
Step 4: Generate the result and copy the full flex container declaration for your code or project.
Use case: Create ready-to-use Flexbox values for tests, fixtures, or seed data instead of writing each container declaration manually.
Use case: Preview several flex items together by setting the item count, which helps when checking how a layout arranges a group of elements.
Use case: Compare direction, alignment, wrapping, and gap settings visually instead of guessing how the items will appear.
Use case: Prepare a complete flex container declaration to use while prototyping a page layout or updating a stylesheet.
Use case: Explore flex container settings before adding them to a project, then copy the generated declaration for reference.