Simple Pure CSS Dropdown Menu BY Connor Brassington

index.html

<div class="container">
  <div class="tutorial">
    <ul>
      <li>Home</li>
      <li>Blog</li>
      <li>Services <i class="fa fa-angle-down"></i>
        <ul>
          <li>Graphic Design</li>
          <li>Website Design </li>
          <li>Python Programming</li>
          <li>PHP Programming</li>
        </ul>
      </li>
      <li>Tutorials <i class="fa fa-angle-down"></i>
        <ul>
          <li>CSS <span>12 Available</span></li>
          <li>HTML <span>9 Available</span></li>
          <li>Jade<span>3 Available</span></li>
          <li>Javascript<span>21 Available</span></li>
          <li>Design<span>37 Available</span></li>
        </ul>
      </li>
      <li>Contact</li>
    </ul>
    <div class="slider"></div>
    <div class="information">
      <p>A simple, clean looking dropdown menu effect achieved using pure CSS. Simple functionality, method can be extended to create a secondary dropdown block with few edits.</p>
    </div>
  </div>
</div><link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300,600' rel='stylesheet' type='text/css'>
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">

style.css

*,
*:before,
*:after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  height: 100%;
  background-color: #EEEEEE;
}

.container {
  width: 100%;
  height: 100%;
}

.tutorial {
  width: 80%;
  margin: 5% auto 0 auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  background-color: #f9f9f9;
  max-width: 800px;
}
.tutorial .slider {
  width: 100%;
  height: 300px;
  background-color: #F03861;
}
.tutorial .information {
  width: 100%;
  padding: 20px 50px;
  margin-bottom: 30px;
  font-family: "Open Sans", sans-serif;
}
.tutorial .information h1 {
  color: #333;
  font-size: 1.5rem;
  padding: 0px 10px;
  border-left: 3px solid #F03861;
}
.tutorial .information h3 {
  color: #e0e0e0;
  font-size: 1rem;
  font-weight: 300;
  padding: 0px 10px;
  border-left: 3px solid #F03861;
}
.tutorial .information p {
  padding: 10px 0px;
}
.tutorial ul {
  font-size: 0;
  list-style-type: none;
}
.tutorial ul li {
  font-family: "Open Sans", sans-serif;
  font-size: 1rem;
  font-weight: 400;
  color: #333;
  display: inline-block;
  padding: 15px;
  position: relative;
}
.tutorial ul li ul {
  display: none;
}
.tutorial ul li:hover {
  cursor: pointer;
  background-color: #f2f2f2;
}
.tutorial ul li:hover ul {
  display: block;
  margin-top: 15px;
  width: 200px;
  left: 0;
  position: absolute;
}
.tutorial ul li:hover ul li {
  display: block;
  background-color: #e7e7e7;
}
.tutorial ul li:hover ul li span {
  float: right;
  color: #f9f9f9;
  background-color: #F03861;
  padding: 2px 5px;
  text-align: center;
  font-size: .8rem;
  border-radius: 3px;
}
.tutorial ul li:hover ul li:hover {
  background-color: #e0e0e0;
}
.tutorial ul li:hover ul li:hover span {
  background-color: #ee204e;
}

as seen on https://codepen.io/connorbrassington/pen/raNrEW