body {
  font-family: Arial;
  margin: 0;
  background: #f5f5f5;
}
.header {
  background: black;
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
}
nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}
.hero {
  padding: 80px;
  text-align: center;
  background: #111;
  color: white;
}
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: orange;
  color: black;
  text-decoration: none;
  margin-top: 10px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 20px;
  padding: 40px;
}
.card {
  background: white;
  padding: 20px;
  border-radius: 10px;
}
footer {
  text-align: center;
  padding: 20px;
}