Can someone help me fix this bootstrap code to stay fixed at the top of the webpage while scrolling down?
Below is the bootstrap code that I currently have. I need assistance in making it change from a static position to a fixed one as users scroll down the page.
<div class="header_top" id="home">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<button class="navbar-toggler navbar-toggler-right mx-auto" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mx-auto">
<li class="nav-item active">
<a class="nav-link" href="index.html">Home
<span class="sr-only">(current)</span>
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="about.html">About</a>
</li>
<li class="nav-item">
<a class="nav-link scroll" href="#menu">Menu</a>
</li>
<li class="nav-item">
<a class="nav-link" href="blog.html">Blog</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true"
aria-expanded="false">
Drop Down
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#"></a>
<a class="dropdown-item" href="gallery.html">Gallery</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="404.html">Services</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="contact.html">Contact</a>
</li>
</ul>
</div>
</nav>
</div>