Change Details

**Author:** `aishoodame` **Description:** # Sizing fonts and sizing by font metrics The only way the WWW author has to know the what size of type is well readable by a user is the default size selected by the user. When a font is displayed at a size smaller than the user's default font size, that creates a usability and accessibility problem. This is more widespread a problem than only affecting those who's eyesight is so poor that they count as disabled. Screen resolution, in the sense of dots per inch (DPI), will determine how much space on the display a glyph occupies, making measurements in pixels (px) an especially ineffective unit to use in specifying typeface size. ## Units and methods for typeface sizing Relevant information about the CSS properties is at https://www.w3.org/TR/2009/CR-CSS2-20090908/fonts.html#font-size-props See also: [Chapter 4 : The amazing em unit and other best practices](https://www.w3.org/WAI/GL/css2em.htm) The Wikipedia entry on em is illuminating. -------------------------- **Version**: unspecified **Severity**: normal

**Author:** `aishoodame` **Description:** = Sizing fonts and sizing by font metrics The only way the WWW author has to know the what size of type is well readable by a user is the default size selected by the user. When a font is displayed at a size smaller than the user's default font size, that creates a usability and accessibility problem. This is more widespread a problem than only affecting those who's eyesight is so poor that they count as disabled. Screen resolution, in the sense of dots per inch (DPI), will determine how much space on the display a glyph occupies, making measurements in pixels (px) an especially ineffective unit to use in specifying typeface size. == Units and methods for typeface sizing Relevant information about the CSS properties is at https://www.w3.org/TR/2009/CR-CSS2-20090908/fonts.html#font-size-props === See also - [WAI Chapter 4 : The amazing em unit and other best practices](https://www.w3.org/WAI/GL/css2em.htm) -------------------------- **Version**: unspecified **Severity**: normal

**Author:** `aishoodame` **Description:** # = Sizing fonts and sizing by font metrics The only way the WWW author has to know the what size of type is well readable by a user is the default size selected by the user. When a font is displayed at a size smaller than the user's default font size, that creates a usability and accessibility problem. This is more widespread a problem than only affecting those who's eyesight is so poor that they count as disabled. Screen resolution, in the sense of dots per inch (DPI), will determine how much space on the display a glyph occupies, making measurements in pixels (px) an especially ineffective unit to use in specifying typeface size. ## == Units and methods for typeface sizing Relevant information about the CSS properties is at https://www.w3.org/TR/2009/CR-CSS2-20090908/fonts.html#font-size-props === See also: [- [WAI Chapter 4 : The amazing em unit and other best practices](https://www.w3.org/WAI/GL/css2em.htm) The Wikipedia entry on em is illuminating. -------------------------- **Version**: unspecified **Severity**: normal