### Figures

1. Setting absolute-length left margins
2. Using pixel lengths
3. Using em for margins and font sizing
4. Varying x-heights
5. ems versus rems
6. Character-relative sizing
7. Viewport-relative sizing
8. Inserting attribute values
9. Naming colors
10. Text set in shades of gray
11. Text set in progressive translucency
12. Text set in progressive translucency, redux
13. The spectrum on a wheel and a strip
14. Mixing RGB to create the spectrum
15. Varying lightness and hues
16. Keyword-equivalent hue angles and lightnesses
17. Using custom values to color headings
18. Scoping custom values to certain contexts