I can't figure out the code here to change the margin

Hi,

I have the wp timelinr plugin installed, and I'm trying to add more space between the dates on the left and text on the right. I had tried some code that fixed the current text item, but then when I clicked on the down arrow, I saw that that the rest of them were not affected. Everything I have tried failed.

Here's the url: http://tinyurl.com/ou6a927

Thanks