grid in div responsive

Hello,

I have a grid on one layer. As I do to occupy 100% width and height?

I have 2 layers: one that occupies 30% of the screen and one that occupies 70%.
In the second layer I have a grid, as I do to occupy 100% in height and just leave me the vertical scroll?

You can use something like next

[code]

[/code]

And init grid in the “gridbox” container