Bootstrap, from Twitter, is the most popular front-end framework at present. Bootstrap is based on HTML, CSS, and JAVASCRIPT. It is simple and flexible, making web development faster. A responsive navigation bar is to view different effects on different devices.
Let me share the code below:
<header role="banner"><nav role="navigation"><div><div><button type="button" data-toggle="collapse" data-target=".navbar-collapse"><span></span><span></span><span></span><span></span></button><a href="index.html">Bootstrappin'</a></div><ul><li><a href="index.html">Home</a></li><li><a href="#">Portfolio</a></li><li><a href="#">Team</a></li><li><a href="#">Contact</a></li></ul></div><!--/.nav-collapse --></div><!--/.container --></nav></header>
data-toggle=”collapse” expected behavior
The above content is an example introduction to BootStrap responsive navigation bar introduced to you by the editor. I hope it will be helpful to you!