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Flexbox Generator

Generate CSS flexbox layouts visually. Click items to edit their properties.

Container

gap8px

Preview

Item 1
Item 2
Item 3

Selected: Item 1

flex-grow0
flex-shrink1
order0

Container CSS

display: flex;
flex-direction: row;
flex-wrap: nowrap;
justify-content: flex-start;
align-items: stretch;
gap: 8px;

Selected Item CSS

flex-grow: 0;
flex-shrink: 1;
flex-basis: auto;

About CSS Flexbox

CSS Flexbox (Flexible Box Layout) is a one-dimensional layout model that makes it easy to align and distribute space among items in a container, even when their size is unknown or dynamic.

Key Concepts

  • flex-direction: Defines the main axis (row or column)
  • justify-content: Aligns items along the main axis
  • align-items: Aligns items along the cross axis
  • flex-grow: How much an item grows relative to others

Frequently Asked Questions

What is the difference between justify-content and align-items?

justify-content aligns items along the main axis (horizontal in row direction), while align-items aligns them along the cross axis (vertical in row direction).

When should I use flexbox vs grid?

Use flexbox for one-dimensional layouts (a row or column). Use CSS Grid for two-dimensional layouts (rows and columns simultaneously).

What does flex-grow: 1 do?

It makes the item grow to fill available space. If multiple items have flex-grow: 1, they share the space equally.

Is flexbox supported in all browsers?

Yes, flexbox is supported in all modern browsers including Chrome, Firefox, Safari, and Edge.