Defines the alignment along the main axis, how is extra space distributed.
|FlexStart||Items are packed toward the start line. Default Value.|
|Center||Items are centered along the line.|
|FlexEnd||Items are packed toward the end line.|
|SpaceBetween||Items are evenly distributed in the line; first item is on the start line, last item on the end line.|
|SpaceAround||Items are evenly distributed in the line with equal space around them.|