body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
}

header, footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 1em;
}

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

main {
  background: white;
  padding: 20px;
  margin: 20px;
  border-radius: 8px;
}

form {
  display: flex;
  flex-direction: column;
  width: 300px;
  margin: auto;
}

label {
  margin-top: 10px;
}

input, select, button {
  padding: 8px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  background: #333;
  color: white;
  border: none;
  cursor: pointer;
  margin-top: 15px;
}

button:hover {
  background: #555;
}

#message {
  color: red;
  text-align: center;
}