text-transforms affect screen readers, too!

Today, I read CSS Can Influence Screenreaders by Ben Myers in which he shared CSS properties that can affect how screen readers treat content.

list-style might be the first surprising property influences accessibility. If you set e.g. list-style: none on a list certain screen reader combinations drop the announcement of the element being a list.

What was new for me was the mention of text-transform. Ben included an example which shows an "add button". It turns out that VoiceOver treats the button differently depending on the text-transform property. It reads out loud "add" and "A.D.D." for the uppercase version.

Creating accessible websites is hard these days. :/

Edited: As Massimo Artizzu pointed out, for the combination of Chrome and VoiceOver an additional aria-label fixes this screen reader behavior for uppercases characters.