h1 {
  color: red;
  font-size: 50px;
  font-family: arial;
  text-align: center;
;
}
p {
  color: black;
  font-size: 20px;
  font-family: arial;
  margin: 20px;
}

header{
  padding: 5px;
  background-color: Darkblue;
  font-size: 15px;
  margin: 0px;
  text-align: center;
  color: white;
  font-family: arial;
}
.topnav {
  background-color: #333;
  overflow: hidden;
}

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

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

.topnav a.active {
  background-color: red;
  color: white;
}
footer{
  padding: 5px;
  background-color: darkblue;
  font-size: 15px;
  margin: 0px;
  text-align: center;
  color: white;
  font-family: arial;
}

body { 
  margin: 0px;