The grid CSS property is a shorthand property that sets all of the explicit and implicit grid properties in a single declaration.
In the grid shorthand, row values and column values are separated bu a slash, with the row values appearing first:
grid: rows / columns;This is the structure for a value containing start and end line names, area names, and track size:
[start line name] "area names" <track size> [end line name]Source: https://developer.mozilla.org/en-US/docs/Web/CSS/grid