A form element without a label:

A form element with two types of labels

An incorrectly identified aria-labelledby

Multiple aria-labelledby values

A form element with label for=

A form element with multiple

label
    for=

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A form element with multiple label for= values

A span with a non-existent ARIA role

A button

An ARIA button

Buttons without value attribute:

Low contrast text

Large text

Large low-contrast text

Absolute sized text

A small image in the background (div):

A small image in the background (span):
A small image in the background with text content (will no be flagged): Text
A 'none' image in the background (will no be flagged):
A large image in the background (will not be flagged):

Absolute sized text from class

Not ARIA-hidden

Overlapping div

Eat my shorts

An element with multiple ARIA roles

Checkbox without aria-checked

Slider without aria-valuemin, aria-valuemax or aria-valuenow

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