What does CSS Flexbox Generator actually do?

The flexbox generator writes a display:flex rule from direction, wrap, justify, align, and gap, with a live preview of placeholder items. It does not know your real children, so a preview with three boxes will not match a nav with ten links.

When should I use CSS Flexbox Generator?

Use it to recall the justify/align pair you want.

When should I not use CSS Flexbox Generator?

Do not debug a production layout only from this preview.

What does CSS Flexbox Generator not do?

Preview items are fake. Gap and margins on real children still add up.

CSS Flexbox Generator

Visually build flexbox layouts. Adjust direction, justify, align, wrap, gap. Live preview + CSS. Free online — runs locally, no upload.

Live Preview

flex-direction

justify-content

align-items

flex-wrap

gap8px

Children count

CSS Output

.container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
  gap: 8px;
}

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CSS Flexbox Generator