Scale
Scale ranks information
- Use size to show rank, not decoration.
- Too many sizes make the screen noisy.
- One strong title, one support level, and one body level is often enough.
Weak versus strong
Title
Weak
Same size as supporting text.
Strong
Largest or strongest because it names the screen job.
Support
Weak
Competes with the title and button.
Strong
Medium emphasis for evidence, summary, or comparison.
Detail
Weak
Tiny, low contrast, or visually scattered.
Strong
Smaller but readable; available when needed.