The visual presentation of blocks of text is presented in such a manner that the layout does not interfere its readability.
It can happen that people with some cognitive, language and learning disabilities and some low vision users cannot perceive the text and/or lose their reading place if the text is presented in a manner that is difficult for them to read.
It is necessary that:
- Foreground and background colours can be selected by the user.
- Width is no more than 80 characters or glyphs.
- Text is not justified (aligned to both the left and the right margins).
- Line spacing (leading) is at least space-and-a-half within paragraphs, and paragraph spacing is at least 1.5 times larger than the line spacing.
- Text can be resized without assistive technology up to 200 percent in a way that does not require the user to scroll horizontally to read a line of text on a full-screen window.
Source: W3C, n.d.:Understanding Success Criterion 1.4.8: Visual Presentation.https://www.w3.org/WAI/WCAG21/Understanding/visual-presentation.html [1.9.2022].