michael@0: # Checking if these elements support :optional.
michael@0: == css-optional-textarea.html css-optional-textarea-ref.html
michael@0: == css-optional-input.html css-optional-input-ref.html
michael@0: == css-optional-select.html css-optional-select-ref.html
michael@0: == css-optional-button.html about:blank
michael@0: 
michael@0: # Checking dynamic behavior.
michael@0: == css-optional-dyn-1.html css-optional-input-ref.html
michael@0: == css-optional-dyn-2.html about:blank
michael@0: