by Vivienne Trulock
There are 5 specific checkpoints in Guideline 6.
When a HTML page is displayed without style sheets, it must still be possible to read the document. Content should still appear in a meaningful order when the style sheets are turned off. It is specially important to check this where style sheets are used for layout.
Turn off the style sheets in your browser.
Or, temporarily rename (for external style sheets) or comment out (in-page styles) the style sheets so that they are not available to the document.
If the page is then still readable and understandable, the page will have passed. If the page is not readable or understandable in full without style sheets, the page will have failed.