body {
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  margin: 0;
  padding: 0;
}
header {
  background-color: #4CAF50;
  color: white;
  padding: 30px 20px;
  text-align: center;
}
nav {
  background: #333;
  text-align: center;
  padding: 10px 0;
}
nav a {
  color: white;
  text-decoration: none;
  margin: 0 15px;
}
main {
  padding: 30px;
}
footer {
  background-color: #eee;
  padding: 15px;
  text-align: center;
  margin-top: 30px;
}
form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
input, textarea {
  padding: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}
button {
  background-color: #4CAF50;
  color: white;
  padding: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
button:hover {
  background-color: #45a049;
}