Bootstrap 4: How to Make Top Fixed Navbar Stay in Container and Not Stretch?
bootstrap navbar container when scroll down navbar fixed top container fluid - Stack Overflow
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