Customize Nautilus file list display

Pling.com - Libre Publishing
1

Hi, I have a probably an easy question for you guys!

In Stretch, looking at a list of files in Nautilus, there is a grey horizontal line between each file:

http://realityisreality.com/l/stretch.png

In Jessie, these lines weren’t there:

http://realityisreality.com/l/jessie.png

How can I remove the lines in Stretch?

Thanks much!

Mark