Making the width/height relative
If the Flexbox component is defined as part of a "row" of Flexboxes, you can set the width of each column in the row relative to the other columns. If the Flexbox component is defined as part of a "column" of Flexboxes, you can set the relative height of each row.
To make the width/height of a Flexbox component relative to other Flexboxes, use this procedure: