CSS Flexbox Generator
Build flex layouts visually by toggling direction, wrap, justification, alignment, and gap on a live playground of items. The generator writes the exact container and item CSS for your choices.
Step-by-step guide to the CSS Flexbox Generator
- Set the main-axis direction and whether items wrap.
- Choose how items are justified along the main axis.
- Adjust cross-axis alignment and the gap between items.
- Copy the generated flex CSS into your layout.
Practical scenarios for the CSS Flexbox Generator
- Building navigation bars, button groups, and card rows.
- Centering a element both ways without remembering the old centering hacks.
- Prototyping how content behaves as it grows or wraps.
- Learning flexbox interactively instead of from static diagrams.
How the CSS Flexbox Generator works under the hood
Flexbox lays out items along one axis at a time: justify-content distributes along the main axis, align-items controls the cross axis, and gap replaces the old margin-based spacing. The playground shows multiple items so the effect of space-between or center is obvious with real content. Output covers the container properties you set and stays plain, composable CSS.
What the CSS Flexbox Generator does not do
Deeply nested flex layouts with unusual min-width behavior can surprise; test edge cases with long text content before shipping.
Common questions about the CSS Flexbox Generator
How do I center something perfectly?
justify-content center with align-items center on the container does both axes at once.
What does gap replace?
The old pattern of margin tricks and negative offsets for spacing flex children.
Should I use flexbox or grid?
Flexbox for one-dimensional rows or columns of content; grid when you need two-dimensional structure.
Last reviewed: October 2026.