@import 'https://fonts.googleapis.com/css?family=Open+Sans';

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
    font-size: 14px;
    font-family: 'Open Sans', sans-serif;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 10px 30px;
    text-decoration: none;
    font-family: 'Open Sans', sans-serif;
    
}

a:hover:not(.active) {
    background-color: #111;
}

.active {
background-color:#4CAF50;
}

.video { 
    display: block;
    margin: 0 auto; width: 600px; height: 350px;
    align-content: center;
    font-family: 'Open Sans', sans-serif;
}

h3 {
    
    font-family: 'Open Sans', sans-serif;
}

nav ul li a,
nav ul li a:after,
nav ul li a:before {
  transition: all .5s;
}
nav ul li a:hover {
  color: #555;
}


/* SHIFT */
nav.shift ul li a {
  position:relative;
  z-index: 1;
}
nav.shift ul li a:hover {
  color: #91640F;
}
nav.shift ul li a:after {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  margin: auto;
  width: 100%;
  height: 1px;
  content: '.';
  color: transparent;
  background: #F1C40F;
  visibility: none;
  opacity: 0;
  z-index: -1;
}
nav.shift ul li a:hover:after {
  opacity: 1;
  visibility: visible;
  height: 100%;
}