Low Vision User Test: Web Accessibility Manual Checks

Low Vision User Test: Web Accessibility Manual Checks


Some users will apply their own custom style sheet to
a web page to make page viewing easier. The page’s author should not use code in a way that will
prevent a user from personalizing the page to fit their needs. Applying the lowvis.css style sheet is a simple way to
test if a page can be personalized. With Firefox open, click the CSS button on the Web
Developer Toolbar, then select Add user style sheet. Click the Desktop icon. Click the LowVis file, then click the Open button. Once LowVis.css is applied to the webpage, the following changes should occur: All text sizes increase dramatically, the background and text colors change to a brown hue, and paragraphs are displayed with a surrounding border To return the page back to normal, Click on CSS button on the Web Developer
Toolbar, then deselect Add User Style Sheet. If any of the changes do not occur, the web page will need
repair because the users’ style sheet will not override the page’s settings. Here is how to troubleshoot when lowvis.css doesn’t work, Look for the text exclamation mark followed by
the word important in the CSS code. If this word appears to the right of any tag font size or color,
for example, the lowvis.css style sheet will not be able to override it. Also look for paragraphs broken up by “br” tags
instead fo by “p” paragraph tags or divs.

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