Testing that CSSStyleDeclaration updates after inserting new CSS properties.


== Running test suite: AddCSSProperty
-- Running test case: AddCSSProperty.AppendAfterMissingSemicolon
PASS: `color: green` property should be appended.

-- Running test case: AddCSSProperty.InsertBeforeAndAfter
PASS: `color: green` property should be inserted before the first property.
PASS: `display: block` property should be appended at the end.

-- Running test case: AddCSSProperty.InsertBetween
PASS: `font-family: fantasy` property should be inserted after the first property.

-- Running test case: AddCSSProperty.AppendAfterCommentedOutProperty
PASS: `display: inline` property should be appended.

-- Running test case: AddCSSProperty.AppendAfterCommentedOutPropertyWithoutSemicolon
PASS: `display: inline` property should be appended.