Bootstrap on Twitter: "Ayyy, now that flexbox is standard in v4, we have a new navbar coming. Demo: https://t.co/H1cWU9DhKi. PR: https://t.co/tS1yPDFVeN https://t.co/Fp1uVRrPP1" / Twitter
Fixed-Top Navbar Covers Content - Material Design for Bootstrap
html - Bootstrap 4, navbar fixed-top and other sticky-top elements - Stack Overflow
Bootstrap 4: How to Make Top Fixed Navbar Stay in Container and Not Stretch?
css - Bootstrap navbar-fixed-top is not working - Stack Overflow