body {
  background: #222;
  font-family: 'Orbitron', sans-serif;
}

li {
  border-right: 1px solid teal;
  border-top: 1px solid teal;
  border-radius: 3px 3px 0 0;
  width: 10%;
  float: left;
  padding: 5px 10px 5px 10px;
  text-align: center;
  font-size: xx-small;
}

li:first-child {
  border-left: 1px solid teal;
}

li a{
  color: cyan;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 2px;
  font-kerning: auto;
  font-stretch: 200%;
}

.active {
  background: #333;
  border-top: solid #0ff 1px;
  border-right: solid #0ff 1px;
  border-left: solid #0ff 1px;
}

iframe {
  width: 100%;
  height: 90%;
  border: 1px solid teal;
  border-radius: 10px;
}