Home page slider is not full-width

I don't know if I've messed this up with custom css, but my home page slider is not full width even though I'm using the full-width template. For widths greater than 980, the horizontal scrollbar appears and you can slide it to the right to see that the home page slider does not go all the way to the right edge. At smaller widths, there is no horizontal scrollbar, but it looks "cutoff" on the right. That is, there is more visible margin on the left. http://miboxdallas.yourstagingwebsite.com