I\'m new to Twitter Bootstrap and want to have a NavBar at the bottom of a deep\'ish MastHead and when the user vertically scrolls the page and the NavBar gets to the top of the
You can try CSS3 sticky position:
.sticky { position: sticky; top: 10px; /* When the element reaches top: 10px, it becomes fixed. */ z-index: 100; }
Browser support: http://caniuse.com/#feat=css-sticky