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. Space on the edge is half of the space between objects. |
| SpaceEvenly | Items are evenly distributed in the line with equal space around them. |