У вас есть два способа решить эту проблему, первый - позволить navbar
постоянно расширяться, используя navbar-expand
вместо navbar-expand-lg
:
Пример 1:
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
<nav class="navbar fixed-top navbar-expand navbar-dark bg-dark" id="navbar">
<div class="collapse navbar-collapse">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#home">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#about">About Me</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#projects">Projects</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#contact">Contact Me</a>
</li>
<li class="nav-item">
<a class="nav-link" href="ResumeKJ.pdf">Resume</a>
</li>
</ul>
</div>
</nav>
Второй способ - добавить код, поддерживающий свернутый режим панели навигации ( Подробнее здесь ), но вам просто нужно добавитькнопка, которая будет переключать свернутую панель навигации:
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
Пример 2:
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
<nav class="navbar fixed-top navbar-expand-lg navbar-dark bg-dark" id="navbar">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#home">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#about">About Me</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#projects">Projects</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#contact">Contact Me</a>
</li>
<li class="nav-item">
<a class="nav-link" href="ResumeKJ.pdf">Resume</a>
</li>
</ul>
</div>
</nav>