What file contains the mark up for the sizing in upfront the fixer theme

What file contains the mark up for the sizing in upfront the fixer theme because sizing and spacing is not maintained even from the theme settings panel. also the video panel option from the drag-able elements only allows for a floating video that hangs on the page over everything else and most of the other video plugins that I have tried crash the upfront editor. it occurs to me that you have made the back end of it to complicated so it is fighting with itself. right now I need to get two things working correctly the menu bar which opens all black with all black entries and no way to modify the background color. where do I go to adjust that for the Menu panel. and the multiple posts are overlapping each other to the extent that the bottom more button is mostly hidden.
need help with these issues as stated above.
thanks in advance.