The state of the "Read more" button, whether its content is collapsed or expanded, is not announced by the screen reader.
Since this element is tabbable, it doesn't require the recommended tabindex="0" but should receive role="button".
In addition, follow this:
Use an aria-expanded attribute to provide information about the current state of the element. Initially, set the value to "false" and handle the functionality using JS.
Refer to:
https://www.w3.org/WAI/GL/wiki/Using_aria-expanded_to_indicate_the_state...
Needs work
3.0
Code
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