I faced exactly this problem, and after some research I found a solution.

Change below "padding:" to 0px:
navbar-fixed-top .navbar-inner, .navbar-fixed-bottom .navbar-inner { padding: 0px;}
To solve a problem. I assume that the change can also be made in the LESS file and recompile css, but instead I made changes to the "main.css" file.
Andreas Klintberg
source share