#overstrike {
  text-decoration: line-through;
}

/*
div#goback {
  display: none;
  float: left;
  border: 1px solid white;
  width: 8em;
  margin-top: 5px;
  margin-left: 5px;
  text-align: center;
}

div#goback a {
  text-decoration: none;
  font-size: 200%;
  color: orange;
}

div#nebulaTitle {
  display: none;
  margin-left: 5em;
  font-size: 400%;
  color: white;
}
*/