Remove space between page rows?

Hi Folks

Using the Canvas theme.

I’m setting up a page which contains publications in rows. Because I’m daft and I want all the titles to be lined up and the corresponding “Download” graphic to be aligned, I’ve decided to put them in rows, much like a spreadsheet. All working fine, although I could so with a little less space between specific rows on the page. This would mean I need to remove the space from above each alternate row. Is this possible in CSS and is it possible to specify a specific page so that it only affects that page?

Each row is 4 columns.

So…
Row 1 would be just for the document titles
Row 2 would be for the download icon for each document

Row 3 would be document titles
Row 4 would be download icons

etc. etc.

The problem is that the titles are quite a long way from the download icon on each row and I wanted to bring the download icon up close to the titles.

Cheers
Chris