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

.banner {
  background-color: #004080; /* deep blue */
  color: #fff;
  padding: 20px;
  font-size: 1.5em;
}

.container {
  margin: 50px auto;
  max-width: 600px;
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  text-align: left;
}

h1 {
  color: #004080;
}

button {
  background-color: #004080;
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #003060;
}

a {
  color: #004080;
  text-decoration: none;
  font-weight: bold;
}

a:hover {
  text-decoration: underline;
}