Testing aria-labels with CSS

aria-label-dection.css

/* Useful for testing visible labels, highlights elements with aria-label(ledby) and puts in the content */

*[aria-label], *[aria-labelledby] {outline: 3px red solid !important;}

*[aria-label]::after, *[aria-labelledby]::after {
  content: attr(aria-label); 
  color: red;
  font-size: 1rem;
  background: white;
  position: absolute;
}
*[aria-labelledby]::after {
  content: attr(aria-labelledby); 
}