A sticky navigation bar stays fixed at the top of the page when you scroll past it.
Scroll this page to see the effect. Note: sticky-top does not work in IE11 and earlier.
Some example text. Some example text. Some example text. Some example text. Some example text.
Some example text. Some example text. Some example text. Some example text. Some example text.
Some example text. Some example text. Some example text. Some example text. Some example text.
Some example text. Some example text. Some example text. Some example text. Some example text.