body {
  background-color: white;
  font-family: "Helvetica", sans-serif, "verdana";
  padding: 5px 25px;
  font-size: 18px;
  margin: 0;
  color: #444;
}

nav{
  margin-top: -10px;
  margin-bottom: 5px;
  display: block;
  text-align: center;
}

a{
  text-decoration: none;
  font-size: 1.3;
}

.active{
  color: red;
  text-decoration: underline;
}