Changes

* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=CSS Animations +Parsing+and+Computation CSS Parsing and TransitionsComputation]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=CSS+Transitions+and+Animations CSS Parsing Transitions and ComputationAnimations]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=DOM:+CSS+Object+Model DOM: CSS Object Model]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=LayoutLayout]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout: +Block +and +InlineLayout: Block and Inline]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout:+Columns Layout: Columns]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout: +FlexboxLayout: Flexbox]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout: +FloatsLayout: Floats]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout: +Form ControlsLayout: Form Controls]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout:+Generated+Content,+Lists,+and+Counters Layout: Generated Content, Lists, and Counters]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout:+Grid Layout: Grid]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout:+Images,+Video,+and+HTML+Frames Layout: Images, Video, and HTML Frames]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout:+Positioned Layout: Positioned]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout: +RubyLayout: Ruby]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout: +Scrolling +and +OverflowLayout: Scrolling and Overflow]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout:+Tables Layout: Tables]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Layout: +Text +and +FontsLayout: Text and Fonts]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Print+Preview Print Preview]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Printing: +OutputPrinting: Output]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Printing:+Setup Printing: Setup]* [https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=SVG SVG]