Remove horizontal rule separating items in dhtmlxList

Every sample of dhtmlxList on your website has a dim gray line (i.e., a horizontal rule) separating one list item from the next, and it does not appear to be something that is specified by the template in any of the samples. Is there a way to eliminate that separating line?

Please, try to use the following css:

.dhx_list .dhx_list_default_item, .dhx_list .dhx_list_default_item_selected{
border-bottom: none important;
border-left: none important!;