JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<nav class="navbar navbar-default navbar-fixed-top">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar"> <span class="sr-only">Toggle navigation</span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>

            </button> <a class="navbar-brand" href="#">Project name</a>

        </div>
        <div id="navbar" class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
                <li class="active"><a href="#">Dynamically changing text</a>

                </li>
                <li><a href="#about">About</a>

                </li>
                <li><a href="#contact">Contact</a>

                </li>
                <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>

                    <ul class="dropdown-menu" role="menu">
                        <li><a href="#">Action</a>

                        </li>
                        <li><a href="#">Another action</a>

                        </li>
                        <li><a href="#">Something else here</a>

                        </li>
                        <li class="divider"></li>
                        <li class="dropdown-header">Nav header</li>
                        <li><a href="#">Separated link</a>

                        </li>
                        <li><a href="#">One more separated link</a>

                        </li>
                    </ul>
                </li>
            </ul>
            <ul class="nav navbar-nav navbar-right">
                <li><a...

CSS

body {
    min-height: 2000px;
    padding-top: 70px;
    background: gray;
}
.jumbotron {
    background: darkgray;
}

JavaScript

function adjust_body_offset() {
    $('body').css('padding-top', $('.navbar-default').outerHeight(true) + 'px' );
}

$(window).resize(adjust_body_offset);

$(document).ready(adjust_body_offset);