The dropdown menu does not appear correctly - html

Question

I made this page
* {
box-sizing: border-box;
}
/* Navbar */
nav {
background: #4D636F;
max-height: 51px;
margin: 0;
overflow: hidden;
padding: 0;
}
nav a {
text-decoration: none;
}
nav span.badge {
position: absolute;
font-size: 12px;
top: 5px;
right: 6;
background-color: #4CAF50;
padding: 1px 4px;
border-radius: 50%;
}
nav .logo {
background: #3A4B53;
float: left;
font-size: 18px;
padding: 12px 18px;
color: #fff;
cursor: pointer;
}
nav .logo i {
margin-right: 13px;
}
nav ul {
list-style-type: none;
margin: 0;
padding-top: 12px;
}
nav ul li {
display: inline;
}
nav ul li a {
color: #fff;
padding: 12px 18px;
font-size: 18px;
transition: all 0.2s ease;
}
nav ul li a:hover {
color: #444;
background-color: white;
}
nav .right {
float: right;
}
nav .right a img {
width: 25px;
height: 25px;
border-radius: 50%;
margin-bottom: 8px;
}
li.dropdown {
position: relative;
}
.dropdown-menu {
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
padding: 0;
top: 20px;
z-index: 1;
left: 0;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2)
}
.dropdown-menu a {
color: #444;
text-align: left;
padding: 0;
display: block;
}
/* Navbar ends */
<link href="http://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet"/>
<nav id="myNav">
<div class="logo">
<span><i class="fa fa-home" aria-hidden="true"></i>Logo</span>
</div>
<ul>
<li><i class="fa fa-globe" aria-hidden="true"></i></li>
<li><i class="fa fa-user" aria-hidden="true"></i></li>
<li><i class="fa fa-envelope" aria-hidden="true"></i></li>
<li class="dropdown">
<a href="#" style="position: relative;"><i class="fa fa-bell"></i>
<span class="badge">3</span>
</a>
<div class="dropdown-menu">
One
One
One
</div>
</li>
<li class="right"><img src="images/profile.png" align="middle"></li>
</ul>
</nav>
The problem as viewed is that the dropdown-menu does not appear correctly.
I made it it absolute and it has z-index : 1 :(
I know that I didn't make it hoverable but I want it to appear then I will handle it.
I don't feel anything wrong with the code, but the output says otherwise.
What I did wrong? And what should I do to make it right?

Answer 1

Your problem is the overflow: hidden in the nav
* {
box-sizing: border-box;
}
/* Navbar */
nav {
background: #4D636F;
max-height: 71px;
margin: 0;
padding: 0;
}
nav a {
text-decoration: none;
}
nav span.badge {
position: relative;
font-size: 12px;
top: -11px;
height: 15px;
background-color: #4CAF50;
padding: 2px 6px;
border-radius: 50%;
}
nav .logo {
background: #3A4B53;
float: left;
font-size: 18px;
padding: 12px 18px;
color: #fff;
cursor: pointer;
}
nav .logo i {
margin-right: 13px;
}
nav ul {
list-style-type: none;
margin: 0;
line-height: 45px
}
nav ul li {
display: inline;
}
nav ul li a {
color: #fff;
padding: 12px 18px;
font-size: 18px;
transition: all 0.2s ease;
}
nav ul li a:hover {
color: #444;
background-color: white;
}
nav .right {
float: right;
}
nav .right a img {
width: 25px;
height: 25px;
border-radius: 50%;
margin-bottom: 8px;
}
li.dropdown {
position: relative;
}
.dropdown-menu {
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
padding: 0;
top: 31px;
z-index: 1;
left: 0;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2)
}
.dropdown-menu a {
color: #444;
text-align: left;
padding: 0;
display: block;
}
/* Navbar ends */
<link href="http://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet"/>
<nav id="myNav">
<div class="logo">
<span><i class="fa fa-home" aria-hidden="true"></i>Logo</span>
</div>
<ul>
<li><i class="fa fa-globe" aria-hidden="true"></i></li>
<li><i class="fa fa-user" aria-hidden="true"></i></li>
<li><i class="fa fa-envelope" aria-hidden="true"></i></li>
<li class="dropdown">
<a href="#" style="position: relative;"><i class="fa fa-bell"></i>
<span class="badge">3</span>
</a>
<div class="dropdown-menu">
One
One
One
</div>
</li>
<li class="right"><img src="images/profile.png" align="middle"></li>
</ul>
</nav>

Answer 2

.dropdown-menu {
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
padding: 0;
top: 31px;
z-index: 1;
left: 0;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
max-height: 71px;
overflow-y: hidden;
}
.dropdown-menu :hover {
overflow-y: visible;
}
I used that a couple of times on my web page.