Define a header row of 100 pixels, and add as many additional rows as necessary, alternating heights of 30 and 60 pixels:
The grid-rows property is not supported in any of the major browsers.
The grid-rows property specifies the height of each row in the grid.
Tip: Using grid systems is a great value for print designers. Now the same concept is applied to online content. The grid-properties add capabilities for sizing and positioning headings, text, and images in a scalable grid.
|length||Refers to the grid of the containing block|
|%||Refers to the height of the containing block|