hover and mega menu not working in navigation items - html

Question

I'm new to bootstrap and have tried implementing a mega menu on hover.But, the mega menu is not displaying.
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
width: 100%;
left: 0;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1;
}
.dropdown-content .header {
background: red;
padding: 16px;
color: white;
}
nav ul li .dropdown:hover .dropdown-content {
display: block;
}
nav ul li a {
line-height: 59px;
-webkit-transition: background-color 0.8s;
-moz-transition: background-color 0.8s;
-o-transition: background-color 0.8s;
transition: background-color 0.8s;
}
nav ul li a:hover,
.dropdown:hover .dropbtn {
background-color: #EFF3F6;
}
nav ul li a {
position: relative;
}
nav ul li a:hover:after {
content: "";
display: block;
border-left: 10px solid transparent;
border-right: 10px solid transparent;
border-bottom: 10px solid #7B8B93;
position: absolute;
left: 35%;
bottom: 1px;
}
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Logo</a>
<button 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">
<ul class="navbar-nav ml-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Capabilities</a>
<div class="dropdown">
<div class="dropdown-content">
<div class="header">
<h2>Mega Menu</h2>
</div>
<div class="row">
<div class="col-lg-4">
<h3>Category 1</h3>
Link 1
Link 2
Link 3
</div>
<div class="col-lg-4">
<h3>Category 2</h3>
Link 1
Link 2
Link 3
</div>
<div class="col-lg-4">
<h3>Category 3</h3>
Link 1
Link 2
Link 3
</div>
</div>
</div>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Solutions</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Our Team</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Our Clients</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Blog</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Contact Us</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#"><i class="fas fa-search"></i></a>
</li>
</ul>
</div>
</nav>
<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>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
I dont know where I m getting it wrong. onHover on the nav menu items, the mega menu doesn't pop out. I have tried display:block, but it does not appear. Can somebody please help me to troubleshoot this issue. I would be immensely be grateful. Thank you

Answer 1

Add below styles in your css will solve your problem.
.dropdown{position:initial !important}
.nav-link:hover + .dropdown .dropdown-content{
display: block;
}