Relative vs. Absolute

As a general guideline with CSS, relative measurements are better than absolute measurements.

Units for Font Sizes

• Relative
  • Relative Sizes (to UA settings): xx-small | x-small | small | medium | large | x-large | xx-large
  • Relative Sizes (to context): larger | smaller
  • Percentage (%)
  • "em" units
• Absolute
  • "pt" sizes (8pt, 10pt, 12pt)