CSS Text Decoration Test: text-decoration-style: double invalidation on style change

There should be no sign of an underline when the test completes.

There should be a 5px green double underline when the test completes.

There should be no sign of an overline when the test completes.

There should be a 5px green double overline when the test completes.

There should be no sign of an through-line when the test completes.

There should be a 5px green double through-line when the test completes.