ul {
  list-style: none;
  padding: 0;
  margin: 0;
  background: #ed8447;
}
ul li {
  display: block;
  position: relative;
  float: left;
  background: #ed8447;
}

li ul { display: none; }
ul li a {
  display: block;
  padding: 1em;
  text-decoration: none;
  white-space: nowrap;
  color: #fff;
}
ul li a:hover { background: #2c3e50; }

li:hover > ul {
  display: block;
  position: absolute;
}
li:hover li { float: none; }
li:hover a { background: #ed8447; }
li:hover li a:hover { background: #2c3e50; }
.main-navigation li ul li { border-top: 0; }

ul ul ul {
  left: 100%;
  top: 0;
}

ul:before,
ul:after {
  content: " "; /* 1 */
  display: table; /* 2 */
}
ul:after { clear: both; }