body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #111;
  color: #fff;
}
header {
  background-color: #222;
  padding: 1rem;
  text-align: center;
}
nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 2rem;
}
nav ul li a {
  color: #0f0;
  text-decoration: none;
  font-weight: bold;
}
nav ul li a.active {
  text-decoration: underline;
}
main {
  padding: 2rem;
  text-align: center;
}
.hero {
  padding: 3rem;
  background: #333;
  border-radius: 8px;
  margin: 1rem auto;
  max-width: 600px;
}
footer {
  background-color: #222;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}
form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 400px;
  margin: auto;
}
input, textarea {
  padding: 0.5rem;
  border-radius: 4px;
  border: none;
}
button {
  padding: 0.75rem;
  background-color: #0f0;
  color: #000;
  font-weight: bold;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
