body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}
header {
  background-color: #002f4b;
  color: yellow;
  padding: 20px;
  text-align: center;
}
nav a {
  color: white;
  margin: 0 15px;
  text-decoration: none;
}
section {
  padding: 40px;
}
form input, form textarea {
  display: block;
  width: 100%;
  margin-bottom: 15px;
  padding: 10px;
}
button {
  background-color: #007bff;
  color: white;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
}