Changing to Invision.....how do I get rid of the black lines??

I'm trying to change to Invision, and am using the "temporary themes" feature so that I can make it perfect before I set it to the forum. I'm trying to get rid of these black lines:



I have no idea how to get rid of them. I've removed all semblance of black from the "colours" list (except for text). What's going on?

Hello!
Go to Admin Panel > Display > Pictures and Colors > Colors > CSS Stylesheet and add this code:

Code:

table.ipbtable tfoot td {
display: none;
}

Thank you so much!!