CodePen Embed - Vertical Dropdown Menu

<div class="menu-container">
	<ul class="vertical-nav">
		<li>
			<a href="#"><i data-feather="activity"></i></a>
			<div class="hover-menu">
				<ul>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li class="menu-header">OTHER</li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
				</ul>
			</div>
		</li>
		<li>
			<a href="#"><i data-feather="box"></i></a>
			<div class="hover-menu">
				<ul>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li class="menu-header">OTHER</li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
				</ul>
			</div>
		</li>
		<li>
			<a href="#"><i data-feather="cloud"></i></a>
			<div class="hover-menu">
				<ul>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li class="menu-header">OTHER</li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
				</ul>
			</div>
		</li>
		<li>
			<a href="#"><i data-feather="database"></i></a>
			<div class="hover-menu">
				<ul>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li class="menu-header">OTHER</li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
				</ul>
			</div>
		</li>
		<li>
			<a href="#"><i data-feather="inbox"></i></a>
			<div class="hover-menu">
				<ul>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li class="menu-header">OTHER</li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
				</ul>
			</div>
		</li>
		<li>
			<a href="#"><i data-feather="package"></i></a>
			<div class="hover-menu">
				<ul>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li class="menu-header">OTHER</li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
				</ul>
			</div>
		</li>
		<li>
			<a href="#"><i data-feather="user"></i></a>
			<div class="hover-menu">
				<ul>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li><a href="#">Menu Item</a></li>
					<li class="menu-header">OTHER</li>
					<li><a href="#">Menu Item</a></li>
				</ul>
			</div>
		</li>
		<li class="log-out">
			<a title="Sign out" href="#"><i data-feather="log-out"></i></a>
		</li>
	</ul>
</div>
<div class="content">
	<img src="https://placeimg.com/1280/300/architecture" class="header-image">
	<h1 class="mb-0">Lorem ipsum dot sit amet</h1>
	<p class="mt-0"><small>BY KEREM BEYAZIT</small></p>
	
	<p>Lorem ipsum dolor sit amet consectetur adipiscing elit, rhoncus mollis mattis nulla est erat ligula lectus, urna laoreet habitant a quisque inceptos. Ridiculus commodo purus nec nisi aptent ullamcorper ac phasellus, fringilla etiam porttitor sem euismod
		ultrices fermentum, maecenas dictum himenaeos lectus leo augue risus. Cubilia erat eleifend facilisi turpis aliquet class vehicula pulvinar magnis praesent, curabitur duis auctor ante leo torquent integer non urna, dis vulputate ligula ac accumsan congue
		magna ultricies quis.
	</p>

	<table class="zui-table">
		<thead>
			<tr>
				<th>PLAYER</th>
				<th>POSITION</th>
				<th>HEIGHT</th>
				<th>BORN</th>
				<th>SALARY</th>
			</tr>
		</thead>
		<tbody>
			<tr>
				<td>DeMarcus Cousins</td>
				<td>C</td>
				<td>6'11"</td>
				<td>08-13-1990</td>
				<td>$4,917,000</td>
			</tr>
			<tr>
				<td>Isaiah Thomas</td>
				<td>PG</td>
				<td>5'9"</td>
				<td>02-07-1989</td>
				<td>$473,604</td>
			</tr>
			<tr>
				<td>Ben McLemore</td>
				<td>SG</td>
				<td>6'5"</td>
				<td>02-11-1993</td>
				<td>$2,895,960</td>
			</tr>
			<tr>
				<td>Marcus Thornton</td>
				<td>SG</td>
				<td>6'4"</td>
				<td>05-05-1987</td>
				<td>$7,000,000</td>
			</tr>
			<tr>
				<td>Jason Thompson</td>
				<td>PF</td>
				<td>6'11"</td>
				<td>06-21-1986</td>
				<td>$3,001,000</td>
			</tr>
		</tbody>
	</table>

	<p>Primis a consequat habitasse egestas commodo quisque ultricies luctus dictum nec diam, vel donec leo sed pulvinar dis felis auctor rutrum hendrerit, praesent rhoncus sem volutpat integer porttitor suspendisse nisl vestibulum quis. Torquent aliquam laoreet
		ultricies sodales cubilia dictum semper morbi, vulputate sagittis justo imperdiet natoque cum sem, nisi etiam taciti tempor proin mollis habitasse. </p>

	<p>Nisl facilisi posuere integer malesuada iaculis ornare duis, proin vehicula senectus primis sapien velit bibendum, curabitur sodales viverra montes et torquent. Laoreet phasellus rutrum est et hendrerit, curabitur ullamcorper odio vitae varius rhoncus,
		nullam dignissim tellus quisque. Est velit justo interdum mauris suscipit ridiculus augue ligula class ornare, metus suspendisse semper ullamcorper himenaeos porttitor dictumst inceptos sodales rutrum, pellentesque etiam primis mattis taciti et magnis
		nostra neque. </p>

	<p>Primis a consequat habitasse egestas commodo quisque ultricies luctus dictum nec diam, vel donec leo sed pulvinar dis felis auctor rutrum hendrerit, praesent rhoncus sem volutpat integer porttitor suspendisse nisl vestibulum quis. Torquent aliquam laoreet
		ultricies sodales cubilia dictum semper morbi, vulputate sagittis justo imperdiet natoque cum sem, nisi etiam taciti tempor proin mollis habitasse. </p>
	
	<p>Fames vestibulum himenaeos ultricies hac porta dignissim praesent bibendum fermentum, phasellus risus platea suscipit luctus ut quis metus, ligula convallis litora eros ullamcorper vitae aliquam nullam. Habitant aliquam cubilia ultrices fermentum commodo
		dictumst sed, mattis mi inceptos malesuada vivamus quam mauris rutrum, pharetra sapien justo habitasse sociis felis. </p>

	<p>Nisl facilisi posuere integer malesuada iaculis ornare duis, proin vehicula senectus primis sapien velit bibendum, curabitur sodales viverra montes et torquent. Laoreet phasellus rutrum est et hendrerit, curabitur ullamcorper odio vitae varius rhoncus,
		nullam dignissim tellus quisque. Est velit justo interdum mauris suscipit ridiculus augue ligula class ornare, metus suspendisse semper ullamcorper himenaeos porttitor dictumst inceptos sodales rutrum, pellentesque etiam primis mattis taciti et magnis
		nostra neque. </p>

	<p><strong>Primis a consequat habitasse egestas commodo quisque ultricies luctus dictum nec diam, vel donec leo sed pulvinar dis felis auctor rutrum hendrerit, praesent rhoncus sem volutpat integer porttitor suspendisse nisl vestibulum quis. Torquent aliquam laoreet
		ultricies sodales cubilia dictum semper morbi, vulputate sagittis justo imperdiet natoque cum sem, nisi etiam taciti tempor proin mollis habitasse.</strong></p>
</div>
<footer>
	<p>© 2018 YOU</p>
</footer>

@import url("https://fonts.googleapis.com/css?family=Open+Sans:400,600,700|Roboto+Condensed");
*,
::after,
::before {
	box-sizing: border-box;
}
html,
body {
	margin: 0;
	padding: 0;
	height: 100vh;
}
body {
	webkit-text-size-adjust: 100%;
	font-variant-ligatures: none;
	-webkit-font-variant-ligatures: none;
	text-rendering: optimizeLegibility;
	-moz-osx-font-smoothing: grayscale;
	font-smoothing: antialiased;
	-webkit-font-feature-settings: "kern" on, "liga" on, "calt" on, "onum", "pnum";
	-webkit-font-smoothing: subpixel-antialiased;
	text-shadow: rgba(0, 0, 0, 0.01) 0 0 1px;
	background: #fff;
	font-family: "Roboto", sans-serif;
	font-size: 14px;
	margin: 0;
	font-weight: 400;
	padding: 0;
}
a {
	color: #1e85c9;
}
.vertical-nav {
	position: fixed;
	background:white;
	box-shadow: 0 0 40px #00000021;
	display: flex;
	flex-direction: column;
	justify-content: space-around;
	align-items: center;
	margin: 0;
	padding: 0;
	height: 100vh;
	width: 70px;
}
.vertical-nav li {
	list-style: none;
	display: block;
	width: 100%;
	border-bottom: solid 1px #f2f5ff;
	text-align: center;
	position: relative;
	flex-grow: 1;
	align-items: stretch;
	display: flex;
}
.vertical-nav li:last-child {
	border: none;
}
.vertical-nav li a {
	width: 100%;
	display: flex;
	align-items: center;
	flex-flow: column;
	justify-content: center;
	transition: all 0.2s ease;
}
.vertical-nav li:hover > a {
	background: #fafafa;
	transition: all 0.2s ease;
}
.vertical-nav li:hover > a .feather {
	transform: scale(1.1);
	transition: all 0.2s ease;
}
.vertical-nav li:hover > .hover-menu,
.vertical-nav li:focus-within > .hover-menu {
	visibility: visible;
	opacity: 1;
	-webkit-animation: slide-down 0.2s ease-out;
	-moz-animation: slide-down 0.2s ease-out;
	transition: all 0.5s ease;
	display: block;
}
.vertical-nav li .hover-menu {
	background: white;
	visibility: hidden;
	transition: all 0.5s ease;
	opacity: 0;
	display: none;
	position: absolute;
	left: 70px;
	min-width: 200px;
	margin: 0;
	padding: 0;
	top: 0;
	box-shadow: 0 0 40px #00000021;
}
.vertical-nav li .hover-menu:after {
	right: 100%;
	top: 20%;
	border: solid transparent;
	content: " ";
	height: 0;
	width: 0;
	position: absolute;
	pointer-events: none;
	border-color: rgba(255, 255, 255, 0);
	border-right-color: #ffffff;
	border-width: 10px;
	margin-top: -10px;
}
.vertical-nav li .hover-menu ul {
	margin: 0;
	padding: 0;
}
.vertical-nav li .hover-menu ul li {
	list-style: none;
	display: block;
	width: 100%;
	text-align: center;
}
.vertical-nav li .hover-menu ul li a {
	width: 100%;
	display: block !important;
	text-decoration: none;
	padding: 15px 20px;
	text-align: left;
	height: auto !important;
	font-weight: 400;
}
.vertical-nav li .hover-menu ul li a:hover {
	background: #fafafa;
	transition: 0.3s ease;
}

.menu-header {
	font-family: "Roboto Condensed", sans-serif;
	color: #929292;
	font-size: 13px;
	text-align: left !important;
	padding: 12px 20px 5px 20px;
	font-weight: 600;
	border-bottom: none !important;
}

.log-out a {
	background: #1e85c9;
	color: white;
}
.log-out a:hover {
	color: #1e85c9;
	background: white;
}

@-webkit-keyframes slide-down {
	0% {
		opacity: 0;
		-webkit-transform: translateY(-5%);
	}
	100% {
		opacity: 1;
		-webkit-transform: translateY(0);
	}
	0{
		opacity:0;
		-webkit-transform: translateY(0);
	}
}
@-moz-keyframes slide-down {
	0% {
		opacity: 0;
		-moz-transform: translateY(-5%);
	}
	100% {
		opacity: 1;
		-moz-transform: translateY(0);
	}
}

.content {
	padding: 40px;
	color: #464646;
	width:1170px;
	margin:0 auto;
}
h1,
h2 {
	color:#343535;
	font-weight: 400;
}
p,
.content li {
	color: #949494;
	line-height: 29px;
	font-size: 16px;
	font-weight: 300;
}
.header-image {
    height: 300px;
    width: 100%;
    object-fit: cover;
}

.mt-0{
	margin-top:0;
}

.mb-0{
	margin-bottom:0;
}

/* Zui table (modified) - https://jsfiddle.net/zinoui/dB93J/ */
.zui-table {
	border: solid 1px #ddeeee;
	border-collapse: collapse;
	border-spacing: 0;
	width: 100%;
	box-shadow: 0 0 40px #00000021;
	margin: 50px 0;
}
.zui-table thead th {
	background-color: #fff;
	border: solid 1px #dee;
	color: #343535;
	border: solid 1px #f5f9f9;
	padding: 20px;

	text-align: left;
}
.zui-table tbody td {
	border: solid 1px #edf1f1;
	color: #949494;
	font-size:16px;
	padding: 20px;
}
footer{
	padding:20px 0;
	text-align:center;
}
footer p{
	color:gray;
	font-size:12px;
}

// Feather Icons
feather.replace()

This Pen is owned by Kerem Beyazıt on CodePen.

See more by @kerembeyazit on CodePen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

https://cdnjs.cloudflare.com/ajax/libs/feather-icons/4.9.0/feather.min.js