Defines the order of a flexbox item.
default order: 0;
The order of the flexbox items is the one defined in the HTML code.
order: 1;
The order is relative to the flexbox item's siblings. The final order is defined when all individual flexbox item order values are taken into account.
order: -1;
You can use negative values.
order: 9;
You can set a different value for each flexbox item.