Bootstrap 4: HTML - Using a Div with the Navbar - html

Question

In my project, I have implemented bootstrap in order to create a navbar. This works successfully, and the navbar is fully responsive.
When the screen reaches a certain size, the hamburger icon appears which allows users to select navbar options.
After a user presses the hamburger icon, I want a little box/div to appear directly below. I have performed a media query so that the box does not appear when the hamburger icon disappears.
However what I want to implement is that when the user rescales the window, I want the div box to move along with the hamburger icon.
Here is my existing code:
<nav style="height: 80px;" class="navbar navbar-expand-lg navbar-dark bg-dark">
<img src="{% static 'myicon.png' %}" style="margin-left: -15px;" width="99px" height="91px" class="navbar-brand bIcon" alt="Image of scissors and comb">
<div class="navbar-brand" style="width: 1px; left: 100px; bottom: 1px; position: absolute; height: 77px; border: 1px solid #454545;"></div>
<span class="navbar-brand" style="position: absolute; top: 16px; left: 125px; font-size: 26px; letter-spacing: 1px;" >Test</span>
<button style="margin-top: -16px;" class="navbar-toggler" 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">
// HERE IS THE DIV/BOX I AM TALKING ABOUT =>
<div class="collapseBox" style="width: 100px; margin-left: 100px; height: 100px; border: 1px solid white;"></div>
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Sign Up <span class="sr-only">(current)</span></a>
</li>
</ul>
</div>
</nav>
Does anybody know how to implement this functionality?
Thank you.

Answer 1

A few things I did:
your navigation has the class navbar-expand-lg which means that burger menu disappears on sizes lg and above... so we assigned the class d-lg-none to our div collapseBox
you wanted this div directly under the burger menu, so we get position:absolute for this
next, the burger menu has a margin of 16px to its right (due to margin on the nav element), so we move our div to the right by 16px;
the height of the nav is 80px, so we move our div down by 80px also
working snippet below:
.collapseBox {
width: 100px;
margin-left: 100px;
height: 100px;
background-color: pink;
border: 1px solid red;
position: absolute;
right;
right: 16px;
top: 80px;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
<nav style="height: 80px;" class="navbar navbar-expand-lg navbar-dark bg-dark">
<img src="{% static 'myicon.png' %}" style="margin-left: -15px;" width="99px" height="91px" class="navbar-brand bIcon" alt="Image of scissors and comb">
<div class="navbar-brand" style="width: 1px; left: 100px; bottom: 1px; position: absolute; height: 77px; border: 1px solid #454545;"></div>
<span class="navbar-brand" style="position: absolute; top: 16px; left: 125px; font-size: 26px; letter-spacing: 1px;">Test</span>
<button style="margin-top: -16px;" class="navbar-toggler" 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">
// HERE IS THE DIV/BOX I AM TALKING ABOUT =>
<div class="collapseBox d-lg-none"></div>
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Sign Up <span class="sr-only">(current)</span></a>
</li>
</ul>
</div>
</nav>