Green lines occupy an entire column. So if you want one green line along side your main content, create a section with 2 columns. Ensure the green lines column has a width of 1%, and your main content has a width of 99% – it’s up to you if you want it on the right or left.

If you’re making 2 columns of content (like on the homepage you have your titles in the left column, and video on the right column), and you want the green lines in the middle and on the right, you’d make a 4 column structure that goes content(48%), lines(1%), content(48%), lines(1%). See image below which shows 4 columns, and green line columns only occupying 1% of the width each.

To make the line go behind the main content, it’s the same as the large numbers font… just adjust the Transform>Offset again, and ensure the Z-Index is lower than the column it’s supposed to be behind.