.back 	{
    font-family: Arial, sans-serife;
	font-size: 1em;
    position: relative;
	text-align: center;
	margin-top: 5vh;
    margin-bottom: 5em;		
    letter-spacing: 0.1em;   
    text-shadow: 0px 0px 0px rgba(0, 0, 0, 0.3);
} 

li:first-child {
  margin-top: 0;
}
li:last-child {
  margin-bottom: 0;
}
li:nth-child(even) {
  text-align: right;
}
a {
  color: #fff;
  text-decoration: none;
}
a:hover {
  text-decoration: none;
}
[data-reveal="content"] {
  display: inline-block;
  position: relative;
}
[data-reveal="cover"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  z-index: 1;
}
[data-reveal="text"] {
  opacity: 0;
}
[data-js="reveal"].loaded [data-reveal="cover"] {
  -webkit-animation: reveal-cover 11.5s ease-in-out;
          animation: reveal-cover 11.5s ease-in-out;
}
[data-js="reveal"].loaded [data-reveal="text"] {
  opacity: 1;
  -webkit-animation: reveal-text 11.5s ease-in-out;
          animation: reveal-text 11.5s ease-in-out;
}
@-webkit-keyframes reveal-cover {
  0% {
    width: 0;
    left: 0;
  }
  44% {
    width: 100%;
    left: 0;
  }
  54% {
    width: 100%;
    left: 0;
  }
  100% {
    width: 0;
    left: 100%;
  }
}
@keyframes reveal-cover {
  0% {
    width: 0;
    left: 0;
  }
  44% {
    width: 100%;
    left: 0;
  }
  54% {
    width: 100%;
    left: 0;
  }
  100% {
    width: 0;
    left: 100%;
  }
}
@-webkit-keyframes reveal-text {
  0% {
    opacity: 0;
  }
  44% {
    opacity: 0;
  }
  54% {
    opacity: 1;
  }
}
@keyframes reveal-text {
  0% {
    opacity: 0;
  }
  44% {
    opacity: 0;
  }
  54% {
    opacity: 1;
  }
}