CSS Flexbox Generator
Design a flexbox layout visually and copy the generated CSS.
About this tool
Design a flexbox container layout visually with live controls, then copy the ready-to-use CSS.
Key Features
- All core flexbox properties: direction, wrap, justify-content, align-items, gap
- Live preview with sample boxes
- Standard, widely-supported CSS output
How to Use
- Adjust direction, wrap, justify-content, align-items, and gap.
- Watch the preview update live.
- Copy the generated CSS into your stylesheet.
Benefits
- Understand how each flexbox property affects layout
- Design a layout visually instead of guessing in dev tools
- Get correct, ready-to-paste CSS every time
Frequently Asked Questions
justify-content controls alignment along the main axis (horizontal by default, when direction is row), while align-items controls alignment along the cross axis (vertical by default). Switching direction to column swaps which axis is which, so justify-content then controls vertical alignment instead.
This tool generates CSS for the flex container itself (the parent element with display: flex). Individual flex items can optionally use their own properties like flex-grow or align-self for more control, but the container-level properties shown here are enough for most common layouts.
Yes — flexbox has been supported in all major browsers for many years and requires no vendor prefixes today. It is one of the two standard CSS layout systems (alongside CSS Grid) recommended for modern layouts, in place of older techniques like floats.