Floating image: check alt text by hand
Why it matters
Google does not let add-ons read the alt text of images set to wrap text or float.
How to fix it
Right-click the image, choose Alt text, and make sure it has a description. Or set it to "In line with text" and check again.
Google does not let add-ons read this setting, so Legibright cannot tell whether it is done. Follow the steps above, then mark the item as OK.