body {
  font-family: Arial, sans-serif;
  margin: 2em;
  background-color: #f4f7fa;
  color: #333;
}

form {
  background: #fff;
  padding: 1em;
  border: 1px solid #ccc;
  border-radius: 5px;
  margin-bottom: 2em;
  max-width: 600px;
}

input, textarea {
  width: 100%;
  padding: 0.5em;
  margin-top: 0.5em;
  margin-bottom: 1em;
}

button {
  padding: 0.5em 1em;
  background-color: #2a5d84;
  color: white;
  border: none;
  border-radius: 4px;
}

button:hover {
  background-color: #1d4563;
}

header {
  background-color: #f4f7fa;
  border-bottom: 1px solid #ddd;
  padding: 20px;
  text-align: center;
  color: #333;
}

nav a {
  margin: 0 12px;
  color: #2a5d84;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}