Flexbox Generator makes CSS flexible layouts intuitive and simple. Adjust flex-direction, justify-content, align-items, flex-wrap, and gap properties through a visual control panel, with real-time layout preview. No need to memorize property values - click buttons to switch configurations and auto-generate usable CSS code.
Core Flexbox Properties Explained
Flexbox controls child element layout through container properties: flex-direction sets main axis direction (row horizontal, column vertical); justify-content controls main axis alignment (flex-start, center, space-between, etc.); align-items controls cross-axis alignment; flex-wrap determines wrapping; gap sets element spacing.
Common Layout Patterns
- Horizontal centering: justify-content: center + align-items: center
- Space-between navigation: justify-content: space-between
- Equal card layout: flex-wrap: wrap + fixed width
- Fixed footer: flex-direction: column + margin-top: auto
Choosing Between Flexbox and Grid
Flexbox is ideal for one-dimensional layouts (single row or column), like navigation bars, toolbars, and list items. Grid is better for two-dimensional layouts (controlling rows and columns simultaneously), like overall page structure and complex grids. Use them together: Grid for major layout, Flexbox for local alignment.
FAQ
Q: What do flex-grow and flex-shrink do?
A: flex-grow defines item expansion ratio (default 0, no expansion), flex-shrink defines shrink ratio (default 1, can shrink). For example, flex: 1 means equal distribution of remaining space, flex: 0 0 200px means fixed 200px without stretching.
Q: How to achieve equal height columns?
A: Flexbox's align-items defaults to stretch, so child elements automatically stretch to match container height. Just set display: flex - no extra properties needed - and children maintain equal height.
Q: Why isn't my flex layout working?
A: Common reasons: 1) Forgot to set display: flex; 2) Child elements have fixed width/height overriding flex behavior; 3) Flex container affected by other styles; 4) Browser compatibility issues (all modern browsers support flexbox).