body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
  color: #333;
}

header {
  background-color: #004080;
  color: white;
  padding: 1em;
  text-align: center;
}

nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.5em;
}

nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
  padding: 0.5em;
}

main {
  padding: 2em;
}

.form-container {
  width: 100%;
  max-width: 600px;
  margin: auto;
  background-color: white;
  padding: 1em;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

footer {
  background-color: #e0e0e0;
  text-align: center;
  padding: 1em;
  margin-top: 2em;
}

@media (max-width: 600px) {
  nav a {
    display: block;
    margin: 5px 0;
  }

  main {
    padding: 1em;
  }

  .form-container {
    padding: 0.5em;
  }
}