Currently in the process of integrating Bootstrap into my Sharepoint 2010 site and addressing issues as they arise. However, I am struggling to identify the class responsible for the 'hover' and 'active' effects in the Global Navigation. Refer to the attached image for clarification. As depicted in the second navigation bar, there is an issue with the "transparent box" surrounding the button not extending to the bottom of the navigation element. I am unable to locate the controlling class for this element in order to make the necessary adjustments.