how to increase the length of the column member information?

[hieucocc]

demo normal:

desired:

Thanks you so much so much

 

[hieucocc]

bump

 

[Jake Bunce]

I don't know how to make this work with CSS. You can't fill to 100% of a vertical space where the space doesn't have a set height. If all posts were the same height then you could, but that is not the case.