* {box-sizing: border-box}
body {font-family: Verdana, sans-serif; margin:16px}

.content {
  max-width: 800px;
  margin: auto;
}

.ifoot {
   font-style: italic;
   font-size: 80%;
}

a:link {
text-decoration: none;
color: #00f;
}

a:active {
text-decoration: none;
color: #00f;
}

a:visited  {text-decoration: none;
text-decoration: none;
color: #00f;
}

a:hover {
text-decoration: none;
color: #00a;
}

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

.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

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

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

.footer {
  border-top-style: solid;
  border-width: 1px;  
  border-color: #444;
  margin-top:16px;
  padding-top:16px;
  font-size: 12px;
}