CSS Grid / Flexbox Generator

Build CSS Grid or Flexbox layouts visually. Adjust tracks, gaps and item alignment, preview available width, then copy the generated CSS and HTML.

Copies layout rules and HTML. Preview buttons limit the available width; they do not generate media queries or emulate devices. History keeps up to 50 entries. Preview colors are illustrative.

Layout Builder

Layout Controls

Live Preview

Item 1
Item 2
Item 3
Item 4
Item 5
Item 6

CSS Code

.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto;
  gap: 1rem;
  justify-items: stretch;
  align-items: stretch;
  justify-content: start;
  align-content: start;
}

.item-1 {
}

.item-2 {
}

.item-3 {
}

.item-4 {
}

.item-5 {
}

.item-6 {
}

HTML Code

<div class="container">
  <div class="item-1">Item 1</div>
  <div class="item-2">Item 2</div>
  <div class="item-3">Item 3</div>
  <div class="item-4">Item 4</div>
  <div class="item-5">Item 5</div>
  <div class="item-6">Item 6</div>
</div>

Tips & Best Practices

CSS Grid is perfect for 2D layouts. Use it for complex page layouts, card grids, and precise positioning with rows and columns.

Use responsive breakpoints to create layouts that adapt seamlessly to different screen sizes. Test your layout on mobile, tablet, and desktop.

Start with a preset layout and customize it to match your needs. Presets include common patterns like header/sidebar/main, card grids, and navigation bars.

CSS Grid / Flexbox Generator

Explore layout rules before writing them into a component. Choose Grid to work with rows and columns, or Flexbox to arrange items along a row or column. For a simple Grid example, set grid-template-columns to repeat(3, 1fr) and add items to inspect three equal-width tracks.


The tool generates container and item layout rules plus matching HTML. Width preview buttons constrain the available space; they do not generate media queries or emulate a device. Preview item colors are illustrative. Paste the output into your project, add your own content and presentation styles, then check behavior at the widths you support. The local workspace keeps up to 50 history entries.

Features

  • Switch between CSS Grid and Flexbox layout controls.
  • Configure tracks or direction, wrapping, gaps and alignment.
  • Add items and adjust individual Grid or Flexbox placement options.
  • Preview narrower widths, use presets/undo history and copy CSS or matching HTML.

How to use

  1. Choose Grid or Flexbox and select a preset or configure the container.
  2. For a Grid example, use repeat(3, 1fr) columns and add enough items to see multiple rows.
  3. Adjust gap and alignment; compare the layout at the available preview widths.
  4. Copy CSS and HTML into your component. Add any required media queries yourself and test with your actual content.