Is flexbox better than CSS grid?

Flexbox is usually better for one-dimensional layouts such as navbars, button groups, and card rows, while CSS grid is better for two-dimensional page layouts with explicit rows and columns. Many interfaces use both together.

Free CSS Tool

Free CSS Flexbox Generator

A CSS flexbox generator is a visual tool for building responsive flex layouts by configuring container alignment and individual item behavior in real time. Use it to preview rows, columns, wrapping, spacing, and ordering instantly, then copy production-ready CSS.

This flexbox builder covers the properties developers actually use:flex-direction,justify-content,align-items, item-level flex values, and more. Pair it with NitroClaw's CSS Gradient Generator, Color Contrast Checker, Color Picker, and CSS Box Shadow Generator.

Live Preview

Test the flexbox layout visually in light or dark preview mode.

flex-item-1

Item 1

1 1 180px • order 0

flex-item-2

Item 2

1 1 180px • order 1

flex-item-3

Item 3

1 1 160px • order 2

flex-item-4

Item 4

1 1 220px • order 3

Generated CSS

Copy the current flex container and item rules.

.flex-container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: stretch;
  align-content: stretch;
  gap: 16px;
}

.flex-item-1 {
  flex: 1 1 180px;
  align-self: auto;
  order: 0;
}

.flex-item-2 {
  flex: 1 1 180px;
  align-self: auto;
  order: 1;
}

.flex-item-3 {
  flex: 1 1 160px;
  align-self: auto;
  order: 2;
}

.flex-item-4 {
  flex: 1 1 220px;
  align-self: auto;
  order: 3;
}

Presets

Load common flexbox layout patterns instantly.

Container Controls

Configure the flex container axes, alignment, wrapping, and spacing.

Responsive flexbox builder

flex-directionflex-wrapjustify-contentalign-itemsalign-content

gap (16px)

Child Item Controls

Adjust each flex item independently to test growth, shrinking, ordering, basis sizing, and cross-axis alignment.

Item 1

Item 1 • flex: 1 1 180px

Labelflex-basis

flex-grow (1)

flex-shrink (1)

align-selforder

Item 2

Item 2 • flex: 1 1 180px

Labelflex-basis

flex-grow (1)

flex-shrink (1)

align-selforder

Item 3

Item 3 • flex: 1 1 160px

Labelflex-basis

flex-grow (1)

flex-shrink (1)

align-selforder

Item 4

Item 4 • flex: 1 1 220px

Labelflex-basis

flex-grow (1)

flex-shrink (1)

align-selforder

FAQ

Common flexbox questions for developers using this CSS flexbox generator.

What is a CSS flexbox generator?

A CSS flexbox generator is a visual builder for the flex container and flex item properties used in CSS layouts. It lets you adjust direction, wrapping, alignment, spacing, and item behavior, then copy production-ready CSS without manually writing every declaration.

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

justify-content controls how flex items are distributed along the main axis, while align-items controls how they line up along the cross axis. In a row layout the main axis is horizontal, and in a column layout the main axis is vertical.

When should I use align-content in flexbox?

align-content matters when a flex container wraps onto multiple lines and has extra space on the cross axis. If your layout stays on one line, align-content usually has no visible effect.

What do flex-grow, flex-shrink, and flex-basis do?

flex-grow controls how much an item expands, flex-shrink controls how much it can contract, and flex-basis sets the starting size before available space is distributed. Together they define how each flex item behaves inside the container.