You have set the number of columns to be 5 in that n-tester. That just puts the results into columns and nothing to do with css.
The last 5 are targeted as expected.
I think maybe you thought that the columns mentioned had something to do with CSS but they don’t. It’s just a different way of displaying the results on the test.
It just makes things confusing when you’re thinking certain blocks in a certain order should be highlighted visually, and they look out of order. But then you see the numbers aligned in columns and then you have to readjust the way they should look visually in rows as opposed to columns.