📖 What is Flexbox Generator?
Flexbox Generator creates CSS Flexbox layouts visually. Set flex-direction, justify-content, align-items, flex-wrap and gap with live preview. See how child elements respond to different configurations. Copy the generated CSS for your project. Use it to learn Flexbox, prototype component layouts, or quickly solve alignment challenges. Everything runs in your browser.
💡 Example
Input
Direction: row
Justify: space-between
Align: center
Wrap: wrap
Output
display: flex;
flex-direction: row;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
🛠️ Common Use Cases
- Centering elements horizontally and vertically
- Building navigation bars and header layouts
- Creating responsive card rows that wrap
- Aligning form labels and inputs
- Learning Flexbox with instant visual feedback
📝 Key Flexbox Properties
flex-direction — row (horizontal) or column (vertical)justify-content — alignment along the main axis (start, center, space-between, space-around)align-items — alignment along the cross axis (start, center, stretch, baseline)flex-wrap — wrap items to new lines when they overflowgap — space between flex itemsflex: 1 — make a child fill available space
⚠️ Common Mistakes
- Confusing justify and align — justify works along the main axis (flex-direction), align works perpendicular to it
- Not using flex-wrap — without wrap, items shrink to fit one line and can overflow
- Using Flexbox for 2D layout — Flexbox is 1D (one direction). Use CSS Grid for rows + columns together.
❓ Frequently Asked Questions
How do I center an element with Flexbox? ▾
On the parent: display: flex; justify-content: center; align-items: center. This centers the child both horizontally and vertically.
When should I use Flexbox vs Grid? ▾
Flexbox is for 1D layouts (one direction at a time) — navbars, card rows, centering. Grid is for 2D layouts (rows AND columns) — page structures, dashboards.
What does flex: 1 do? ▾
flex: 1 makes a child element grow to fill all available space. If multiple children have flex: 1, they share space equally.
Is my data private? ▾
Yes — all processing runs entirely in your browser. Your data is never sent to any server.
Is this tool free? ▾
Completely free — no login, no usage limits, works offline once loaded.
Yes — completely free, no login required, no usage limits.
Is my data private? ▾
Yes — all processing runs in your browser. Your data is never sent to any server.
Does it work offline? ▾
Yes — once the page is loaded, the tool works without an internet connection.