row
A container that lays children out horizontally. See col for the vertical counterpart.
Attributes: gap=N, pad=N, align=start|center|end|stretch (cross-axis alignment; defaults to center).
Fill flags on a child claim the parent's free space: fill stretches in both directions, fillx only horizontally, filly only vertically. An explicit w=/h= always wins over stretching. spacer is an invisible flexible gap that pushes siblings apart.
col gap=12 w=320
row gap=8
button "Cancel"
spacer
button "OK" primary
row gap=8 align=center
avatar size=32
text "Aligned center"