body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
}

nav {
  background-color: #005f8f;
  padding: 10px;
  text-align: center;
}

h1.pappo{
	background-color: blueviolet;
	margin: 10px;
	padding: 10px;
	color: yellow;

}

nav button {
  margin: 0 10px;
  padding: 10px 20px;
  color: white;
  background-color: #007acc;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

nav button:hover {
  background-color: #005f8f;
}

.page {
  padding: 20px;
}

.hidden {
  display: none;
}