I would recommend that you use Firefox with Firebug.
If you right click an area in Firefox, and Inspect Element, it will show you in Firebug what properties that element has in your css file. You can also experiment by changing the properties just to see what happens.
I found this:
TABLE.header {
background-image: url(../images/header_bg.jpg);
background-repeat: repeat-x;
background-color: #00640e;
border-right: 1px solid #9a9a9a;
border-left: 1px solid #9a9a9a;
border-bottom: 1px solid #9a9a9a;
}
You are using the classic template, and in the file stylesheet_original.css, at line 63, the Table.header element puts a 1 pixel border around the right, left, and bottom.
If you remove the borders, then you shouldn't get the line, but I don't know if this affects anything else, as I'm quite new too.:smile: