A grid column is a vertical track in a CSS Grid Layout, and is the space between two vertical grid lines. It is defined by the
grid-template-columns property or in the shorthand
In addition, columns may be created in the implicit grid when items are placed outside of columns created in the explicit grid. These columns will be auto-sized by default, or can have a size specified with the
When working with alignment in CSS Grid Layout, the axis down which columns run is known as the block, or column, axis.
- CSS Grid Layout Guide: Basic concepts of grid layout