With grid areas if you are using 6fr 2fr for example you can make one page "content content" and the other "content aside" is you want left or right s

With grid areas if you are using 6fr 2fr for example you can make one page "content content" and the other "content aside" is you want left or right sidebar then something like 2fr 4fr 2fr then "aside content" or "content aside"