Grid & Flexbox Builder

Design CSS Grid and Flexbox layouts visually.

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Resize the container box handle below (bottom-right) to test responsiveness
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.container {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
16px

CSS Grid & Flexbox Guide

Understand the core differences between Grid and Flexbox to structure your layouts efficiently.

When to use Grid vs. Flexbox?

**Flexbox (1D)**: Operates on a single axis (either row OR column). Ideal for UI components like navigation bars, aligning an icon next to text, or wrapping tags. It's fluid and content-driven. **Grid (2D)**: Operates on both X and Y axes simultaneously. Perfect for macro page layouts, masonry photo galleries, and aligning complex dashboard widget tiles.

The Power of Gap

Stop using `margin` with `first-child` or `last-child` hacks to space elements out. The CSS `gap` property applies equal spacing strictly **between** child elements. Both Grid and Flexbox support it natively across all modern browsers.

Responsive Grid Magic

By utilizing `grid-template-columns: repeat(auto-fit, minmax(250px, 1fr))`, you can create auto-flowing responsive card layouts that adapt to any screen size without writing a single `@media` CSS query.