Auto layout positions children automatically within a frame. It supports two modes: **flex** (horizontal/vertical flow) and **grid** (rows and columns with track sizing).
When wrapping a selection, nodes are sorted by visual position: left-to-right for horizontal layout, top-to-bottom for vertical.
## Layout Direction
Choose how children are arranged:
- **Horizontal** — children flow left to right
- **Vertical** — children flow top to bottom
- **Wrap** — children wrap to the next row/column when they run out of space
## Spacing
### Gap
The space between adjacent children. Set a single value that applies between all children.
### Padding
The space between the frame edge and its children. Set a uniform value for all sides, or expand to set each side independently (top, right, bottom, left).
## Alignment
### Justify (main axis)
Controls how children are distributed along the layout direction:
- **Start** — children pack to the beginning
- **Center** — children are centered
- **End** — children pack to the end
- **Space between** — children spread with equal space between them
### Align (cross axis)
Controls how children are positioned perpendicular to the layout direction:
- **Start** — children align to the start
- **Center** — children are centered
- **End** — children align to the end
- **Stretch** — children stretch to fill the cross axis
## Child Sizing
Each child in an auto-layout frame can have its own sizing mode:
- **Fixed** — uses the child's explicit width/height
- **Fill** — stretches to fill available space in the parent
- **Hug** — shrinks to fit the child's content
## Drag Reordering
Within an auto-layout frame, drag a child to reorder it among its siblings. A visual insertion indicator shows where the child will be dropped.
## Properties Panel
When an auto-layout frame is selected, the Layout section in the properties panel shows all auto-layout controls: direction, gap, padding, justify, and align.
Grid layout arranges children in rows and columns with explicit track sizing.
### Enabling Grid
Select a frame with auto layout enabled and click the grid icon in the layout toolbar to switch from flex to grid.
### Track Sizing
Define column and row tracks with three sizing modes:
- **fr** — fractional unit, divides available space proportionally
- **px** — fixed pixel size
- **auto** — sizes to fit content
Example: three columns of `1fr 200px 1fr` creates a layout with a fixed center column and flexible sides.
### Grid Gaps
Set separate horizontal (column) and vertical (row) gaps between cells.
### Child Positioning
Children are placed into grid cells automatically in row order. You can override placement with column/row start and span values in the child's layout properties.
### JSX and Tailwind Export
Grid layouts export to JSX with Tailwind classes: `grid grid-cols-3`, `gap-x-4 gap-y-2`, `col-start-2 row-span-2`.
