Cascading Style Sheets (CSS)

Attaching CSS

<style>
@import url('styles.css');
</style>

CSS Selectors

tag
.class
#id

CSS Units

em for text
px for rest

Right Column

CSS Controls: Values and Units

• Numbers
  • 1
  • 3.5
  • -42.5567
• Percentages
  • 13%
• Colors
  • 17 official names (fuschia, gray, etc.)
  • 100+ unofficial?
  • RGB: rgb(255,255,255)
  • Hex: #FFFFFF
• Length / Size
  • Absolute Measurements:
    • Useful: Pixels* (px)
    • Not so useful; Inches, Centimeters, Millimeters, Points, Picas
  • Relative Measurements:
    • Useful: Em height (em)
    • Not so useful: Ex height (ex)
• CA Standards:
  • px for most things
  • em for text size