FlexAlignItems
Enumerates values that control the alignment of child elements.
Center = 2
Indicates that child elements will be centered within the parent.
End = 4
Indicates that child elements will be placed against the end of the parent.
Start = 3
Indicates that child elements will be placed against the start of the parent.
Stretch = 1
Indicates that child elements will stretch from start to end of the parent.