body {
  font-family: Arial, sans-serif;
  background-color: #0d2b4d;
  color: #fff;
  margin: 0;
  padding: 0;
}
nav {
  background: #061a2b;
  padding: 1rem;
}
nav ul {
  list-style: none;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}
nav a {
  color: #fff;
  text-decoration: none;
}
header {
  text-align: center;
  padding: 4rem 2rem;
}
header .button {
  background-color: #1a73e8;
  color: #fff;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: 4px;
}
main {
  padding: 2rem;
  background: #fff;
  color: #000;
}