body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color:black;
  color:white;
  font-size:0.8vmax;
}

.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 0.8vmax 1vmax;
  text-decoration: none;
  font-size: 1vmax;
  line-height:1vmax;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

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

.lessonbiography
{

padding-left:15%;
padding-right:15%;
text-align: justify;
text-justify: inter-word;
position:absolute;
}