body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
  color: #222;
}

header {
  background: #111827;
  color: white;
  padding: 20px;
}

nav a {
  color: white;
  margin-right: 15px;
  text-decoration: none;
}

.hero {
  background: white;
  padding: 40px;
  margin: 20px;
  border-radius: 10px;
}

.articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  padding: 20px;
}

article {
  background: white;
  padding: 20px;
  border-radius: 10px;
}

footer {
  background: #111827;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 30px;
}