Screen Size
Content should not restrict its view and operation to a single display orientation, such as portrait or landscape, unless a specific display orientation is essential.
Users should be able to view website content in any orientation.
Don't lock content to either portrait or landscape presentation.
See more detailed information on how to comply with these requirements.
Page Flow
Content must be presented without loss of information or functionality, and without requiring scrolling in two dimensions for:
Vertical scrolling content at a width equivalent to 320 CSS pixels;
Horizontal scrolling content at a height equivalent to 256 CSS pixels.
Please see more detailed information on how to comply with these requirements.
Resizing of Text
With the exception of captions and images of text, text should be able to be resized without assistive technology up to 200 percent without loss of content or functionality.
Please see more detailed information on how to comply with these requirements.
Paragraph Sizing
There should be no loss of content or functionality when the user adapts paragraph spacing to 2 times the font size, text line height/spacing to 1.5 times the font size, word spacing to .16 times the font size, and letter spacing to .12 times the font size.
Please see more detailed information on how to comply with these requirements.