Valid attribute values (attribute-values)
Axe-core deprecated + obsolete
Attributes, such as value="example", are properly formed with matching quotation marks.
(HTML auto-corrects this issue)
Quotation marks missing:
This image has alt=Sample diagram, without matching quotation marks:
Original source code of above image is:
<img
src="../../../assets/images/diagram.png"
alt=Sample diagram
style="height: 200px; width: fit-content"/>
src="../../../assets/images/diagram.png"
alt=Sample diagram
style="height: 200px; width: fit-content"/>
You can view the full original source code by pressing Ctrl + U