Understanding Hug, Fill, and Fixed Container Constraints
The core of fluid UI design lies in understanding layout constraint relationships. Use 'Fill Container' for elements that must stretch dynamically across screen widths (such as card bodies and text headers). Use 'Hug Contents' for pill tags, buttons, and badges that resize automatically based on inner text length. Set 'Fixed' constraints only for rigid icon containers and avatar frames.
Flex Wrap Containers: Bringing CSS Flexbox into Figma
Auto Layout 5.0 introduced native Wrap layout capabilities. When designing responsive tag lists, product galleries, or navigation filter bars, wrap behavior automatically shifts items onto the next row as parent frame boundaries decrease — mimicking true browser Flexbox rendering.
Absolute Positioning Within Nested Stacks
By toggling 'Absolute Position' on an inner layer, you can float notification badges, status indicators, and modal close buttons over parent components while keeping the surrounding sibling Auto Layout flow intact.
