2 tabstrips on 1 page - no bottom border on 1

[Jeff]

We have 2 tabstrips on one page. One is used as the overall tabstrip and the other as steps through a form submission. We're using the lightweight rendermode and are modifying the styles on the steps tabstrip using css. We'd like to remove the bottom border on the steps tabscrip but not on the primary. When we use:

html .rtsTop .rtsLevel1 {
    border-bottom: 0;
}

It removes it from both. If we try to just add the border-bottom attribute to the assigned class for the steps tabstrip it doesn't seem to work. Is there a good way to do this?

Also, is there a documentation page available that shows the CSS options in the lightweight rendermode for TabStrip. We couldn't seem to find it.

thanks