body {
  image-rendering: pixelated;
  background-color: black;
  color: white;
  font-family: Verdana;
}

nav {
  width: 500px;
  margin: auto;
  border: 1px solid purple;
  background-color: black;
  fill-opacity: opacity: 0.5;

}

div {
  width: 500px;
  margin: 15;
  border: 1px solid purple;
  background-color: black;
  fill-opacity: opacity: 0.5;
  padding: 5px;

}

a:link {
  color: yellow;
}
a:visited {
  color: orange;
}