"CSS Easing Functions Level 1" . _:vb50822536 . _:vb50822537 . _:vb50822535 "Dean Jackson" . _:vb50822534 . . . _:vb50822534 "Brian Birtles" . . . _:vb50822536 "Matt Rakow" . . _:vb50822537 . "2019-05-30" . _:vb50822536 . . _:vb50822534 . _:vb50822535 . _:vb50822535 . _:vb50822537 . "2019-04-30" .