body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  color: #111;
}
header {
  background-color: #111;
  color: white;
  padding: 1rem;
  text-align: center;
}
nav a {
  margin: 0 15px;
  color: #fff;
  text-decoration: none;
}
section {
  padding: 2rem;
}
footer {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 1rem;
}
form input, form textarea {
  width: 100%;
  padding: 0.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  border-radius: 5px;
  border: 1px solid #ccc;
}
button {
  background-color: #d00000;
  color: white;
  padding: 0.7rem 1.2rem;
  border: none;
  border-radius: 5px;
}
.whatsapp-button {
  position: fixed;
  bottom: 15px;
  right: 15px;
  background-color: #25d366;
  color: white;
  padding: 10px 20px;
  border-radius: 50px;
  text-decoration: none;
}