CSS Flexbox Generator

Simply click on any flex item in the live preview. A properties panel will appear where you can adjust its specific order, flex-grow, flex-shrink, flex-basis, and align-self values.

justify-content aligns items along the main axis (horizontal by default), while align-items aligns them along the cross axis (vertical by default). Our visual generator lets you instantly see the difference when you toggle them.

Yes! The CSS Flexbox Generator runs entirely in your web browser, meaning it is lightning fast, 100% free, and completely private.

CSS Flexible Box Layout (Flexbox) is a one-dimensional layout model. It is designed to distribute space along a single row or column, making it incredibly easy to align and distribute items even when their sizes are unknown.

Flexbox is ideal for one-dimensional layouts (a single row of buttons or a single column of text). CSS Grid is better for two-dimensional layouts where you need strict control over both rows and columns simultaneously.

flex-direction determines the main axis of your layout. Setting it to row places items side-by-side horizontally. Setting it to column stacks the items vertically.

By default, flex items will try to fit onto one line, shrinking if necessary. If you set flex-wrap: wrap, items will gracefully wrap onto multiple lines when there is not enough room in the container.

flex-grow dictates how much of the remaining empty space an item should take up. flex-shrink defines how much an item should shrink when there is not enough space. They dictate proportional sizing.

No! Flexbox is fully supported by all modern browsers (Chrome, Safari, Firefox, Edge). Vendor prefixes (-webkit-box) are only needed if you are supporting extremely old browsers like IE10.

Yes! Flexbox is famous for solving this classic CSS problem. Just set your container to display: flex, and add justify-content: center and align-items: center. Our generator lets you test this instantly.