I'm having trouble getting this multi-level Bootstrap 4 clone dropdown menu to match the appearance of a Bootstrap 4 btn-dark. The colors and styling are all off, and I'm not sure which elements to adjust to achieve the desired look. Any guidance would be much appreciated :).
/* custom styles for multi-level bootstrap dropdown menu */
.dropdown-submenu {
position: relative;
}
.dropdown-submenu>.dropdown-menu {
top: 0;
left: 100%;
margin-top: -6px;
margin-left: -1px;
border-radius: 0 6px 6px 6px;
}
.dropdown-submenu:hover>.dropdown-menu {
display: block;
}
.dropdown-submenu>a:after {
content: " ";
float: right;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;
border-width: 5px 0 5px 5px;
border-left-color: #ccc;
margin-top: 5px;
margin-right: -10px;
}
.dropdown-submenu:hover>li{
background-color: aqua;
}
.dropdown-submenu:hover>a:after {
border-left-color: #fff;
}
.dropdown-submenu.pull-left {
float: none;
}
.dropdown-submenu.pull-left>.dropdown-menu {
left: -100%;
margin-left: 10px;
border-radius: 6px 0 6px 6px;
}<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle btn-dark" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</button>
<ul class="dropdown-menu multi-level" role="menu" aria-labelledby="dropdownMenu">
<li class="dropdown-item"><a href="#">Some action</a></li>
<li class="dropdown-item"><a href="#">Some other action</a></li>
<li class="dropdown-divider"></li>
<li class="dropdown-submenu">
<a class="dropdown-item" tabindex="-1" href="#">Hover me for more options</a>
<ul class="dropdown-menu">
<li class="dropdown-item"><a tabindex="-1" href="#">Second level</a></li>
<li class="dropdown-submenu">
<a class="dropdown-item" href="#">Even More..</a>
<ul class="dropdown-menu">
<li class="dropdown-item"><a href="#">3rd level</a></li>
<li class="dropdown-submenu"><a class="dropdown-item" href="#">another level</a>
<ul class="dropdown-menu">
<li class="dropdown-item"><a href="#">4th level</a></li>
<li class="dropdown-item"><a href="#">4th level</a></li>
<li class="dropdown-item"><a href="#">4th level</a></li>
</ul>
</li>
<li class="dropdown-item"><a href="#">3rd level</a></li>
</ul>
</li>
<li class="dropdown-item"><a href="#">Second level</a></li>
<li class="dropdown-item"><a href="#">Second level</a></li>
</ul>
</li>
</ul>
</div>