CSS: font-size

By Xah Lee. Date: . Last updated: .

font-size property lets you specify font size.

Its value can be any css length unit or percentage.

[see CSS: Units]

Example:

value can also be one of the following:

These are absolute sizes. Their sizes do not change depending on any other element's font size.

Here's what your browser shows:

[xx-large] [200%] [2rem]

[x-large] [150%] [1.5rem]

[large] [110%] [1.1rem]

[medium] [100%] [1rem]

[small] [80%] [0.8rem]

[x-small] [60%] [0.6rem]

[xx-small] [55%] [0.55rem]

As of , {Firefox, Google Chrome, Opera, IE10} basically all agree on these sizes. The x-small and xx-small may differ by 2% or so; the difference can be seen only when the page is magnified at 200%.

[see CSS: Units]

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CSS Basics

  1. Basics
  2. Tag Matching Tutorial
  3. Selector Syntax
  4. Units

Color

  1. Color Syntax
  2. Color Names
  3. Opacity
  4. Linear Gradient
  5. Radial Gradient

Font

  1. font-family
  2. Standard Web Fonts
  3. font-size
  4. Meaning of Font Size
  5. Font Weight
  6. Chinese Font Names

Box Model

  1. Border
  2. Outline
  3. Margin vs Padding
  4. Box Sizing

Layout

  1. Layout Tutorial
  2. Display Property
  3. Position: static, relative, fixed, absolute
  4. Pure CSS Table
  5. Tabbed Menu
  6. 3 Columns Page Layout
  7. Multi-Column Layout for Text Flow
  8. Fix Element to Window
  9. Centering
  10. Flowing List
  11. z-index
  12. Text Over Image
  13. Text Flow Around Image
  14. OverFlow, Scrollbar

Transform/Animation

  1. 2D Transform
  2. Transition
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Line Wrap, Justification

  1. Line Wrap
  2. Text Alignment, Justification
  3. Match first-letter and first-line
  4. “:before”, “:after”
  5. Text Decoration: Underline, Overline, Line-Through
  6. Letter Spacing, Word Spacing

Box Decoration

  1. Box Shadow
  2. Text Shadow
  3. Round Corners
  4. Background Image
  5. Image Rollover

Misc

  1. Computed Style
  2. Pseudo Class vs Pseudo Element
  3. Media Query
  4. Variable
  5. calc
  6. Reset
  7. user-select
  8. Data URI Scheme
  9. protocol-relative URL
  10. Default Unit
  11. Declaring Character Set in CSS File
  12. Jargons Explained: Tag, Element, Node, Object, Attribute, Property, Method
  13. Display Table on Small Screen
  14. Fixed Aspect Ratio
  15. Add Icon to Links
  16. Progress Bar Example

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