The "font-size" CSS Property

This property specifies the size of the font (more specifically the desired height of glyphs from the font).

Values for "font-size"

CSS Level	Value
CSS Fonts Level 4	"<absolute-size> | <relative-size> | <length-percentage [0,∞]> | math", where <absolute-size> = "xx-small | x-small | small | medium | large | x-large | xx-large | xxx-large", and <relative-size> = "larger | smaller"

Syntax Notes for "font-size"

• Absolute sizes include: xx-small, x-small, small, medium, large, x-large, and xx-large
• Relative sizes include: larger and smaller

Notes

• Use of percentage values, or values in 'em's, leads to more robust and cascadable style sheets.

Recommended Links

• CanIUse.com: Search "font-size" (browser compatibility information)
• CanIEmail.com: Search "font-size" (email client compatibility information)
• CSS 2.1: font-size property
• CSS3: font-size property
• CSS Fonts 4: font-size property
• MDN: font-size property
• Quackit: font-size property

Accessibility Information & Tips

• When sizing fonts, use CSS and specify relative sizes using "em", percentages or named font sizes like "xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large", "smaller", or "larger". Visit https://www.w3.org/TR/WCAG20-TECHS/C12, https://www.w3.org/TR/WCAG20-TECHS/C13, and https://www.w3.org/TR/WCAG20-TECHS/C14 for more information.

Search Engine Links (for more information)

• Bing "CSS font-size property"
• Google "CSS font-size property"