Test overwriting justify-self and align-self works as expected On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS getComputedStyle(parent, '').getPropertyValue('justify-items') is "center" PASS getComputedStyle(parent, '').getPropertyValue('align-items') is "stretch" PASS getComputedStyle(childOfDefaultParent, '').getPropertyValue('justify-self') is "flex-end unsafe" PASS getComputedStyle(childOfDefaultParent, '').getPropertyValue('align-self') is "flex-start safe" PASS getComputedStyle(childOfParentId, '').getPropertyValue('justify-self') is "center" PASS getComputedStyle(childOfParentId, '').getPropertyValue('align-self') is "stretch" PASS successfullyParsed is true TEST COMPLETE