Design Principle
Scaling type and containers causes unpredictable overflow; recomposition is more stable.
Principle
Scaling type and containers causes unpredictable overflow; recomposition is more stable.
Design action
Use CSS grid/flex breakpoints, minmax, clamped widths, and stable dimensions; do not scale font size with viewport width.
Examples
Positive example: Card grids, toolbars, tables, and canvases. Counterexample: Body text uses viewport-width font sizing.
Apply when
Card grids, toolbars, tables, and canvases. Content length is unpredictable.
Source notes
Source note: Synthesized from Apple HIG, Material Design, GOV.UK/Polaris/Atlassian component practices, and interaction accessibility principles.
Agent Directive
Use CSS grid/flex breakpoints, minmax, clamped widths, and stable dimensions; do not scale font size with viewport width.