Understanding Success Criterion 1.4.13: Content on Hover or Focus
Imported
Intent
Additional content that appears and disappears in coordination with keyboard focus
or pointer hover often leads to accessibility issues. Reasons for such issues include:
the user may not have intended to trigger the interaction
the user may not know new content has appeared
the new content may intefere with a user’s ability to do a task
Examples of such interactions can include custom tooltips, sub-menus and other nonmodal
popups which display on hover and focus. The intent of this success criterion is to
ensure that authors who cause additional content to appear and disappear in this manner
must design the interaction in such a way that users can:
perceive the additional content AND
dismiss it without disrupting their page experience.
There are usually more predictable and accessible means of adding content to the page,
which authors are recommended to employ. If an author does choose to make additional content appear and disappear in coordination with hover
and keyboard focus, this success criterion specifies three conditions that must be
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