body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #ffffff;
  color: #333;
  line-height: 1.6;
}
header {
  background-color: #0f3b68;
  padding: 1rem;
  color: white;
  text-align: center;
}
header a img {
  background-color: white;
  padding: 0.5rem;
  border-radius: 5px;
  max-height: 60px;
}
nav.topnav {
  background-color: #144a8c;
  text-align: center;
  padding: 0.5rem 0;
}
nav.topnav a {
  color: white;
  margin: 0 1rem;
  text-decoration: none;
  font-weight: bold;
}
main {
  max-width: 1000px;
  margin: auto;
  padding: 2rem;
}
footer {
  background-color: #f1f1f1;
  text-align: center;
  padding: 1rem;
  font-size: 0.85rem;
}
footer a {
  margin: 0 0.5rem;
  color: #144a8c;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}
@media screen and (max-width: 768px) {
  main {
    padding: 1rem;
  }
}