<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Menu Bar</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 mr-auto">
<li class="nav-item">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</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">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
</body>
/* Underline Effect*/
.nav-item {
position: relative;
}
.navbar-collapse ul li a.nav-link:before {
position: absolute;
bottom: -5px;
left: 0;
width: 100%;
height: 2px;
background: transparent;
content: '';
opacity: 0;
-ms-transition: opacity 0.3s, -webkit-transform 0.3s;
-webkit-transition: opacity 0.3s, -webkit-transform 0.3s;
transition: opacity 0.3s, transform 0.3s;
-ms-transform: translateY(10px);
-webkit-transform: translateY(10px);
transform: translateY(10px);
}
.navbar-collapse ul li:hover a.nav-link:before {
opacity: 1;
-ms-transform: translateY(0px);
-webkit-transform: translateY(0px);
transform: translateY(0px);
bottom: 0px;
background: #dd4343;
}
.dropdown-item:hover, .dropdown-item:focus {
color: #ffffff;
text-decoration: none;
background-color: #dd4343;
}
.dropdown-menu {
border: 0px;
}
/* General Styles*/
body {
background-image: url(https://images.pexels.com/photos/373974/pexels-photo-373974.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260);
background-size: cover;
background-position: center;
background-repeat: no-repeat;
height: 100vh;
}
$(document).ready(function() {
$('#navbarDropdown').mouseenter(function() {
$('.dropdown-menu').slideToggle(300, "linear");
});
$('.dropdown-menu').mouseleave(function() {
$(this).slideToggle(300, "linear");
});
});
