body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}
header {
  background: #004080;
  color: #fff;
  padding: 2rem 1rem;
  text-align: center;
}
nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  background: #333;
}
nav a {
  color: white;
  padding: 1rem;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  background: #555;
}
section, main {
  padding: 2rem 1rem;
  text-align: center;
}
.blog-list {
  display: grid;
  gap: 20px;
  margin-top: 2rem;
}
.blog-post h3 {
  margin-bottom: 0.5rem;
}
.blog-post p {
  margin-top: 0;
}
footer {
  margin-top: 2rem;
  padding: 1rem;
  text-align: center;
  background: #333;
  color: white;
  font-size: 0.9rem;
}
@media (max-width: 600px) {
  nav {
    flex-direction: column;
  }
}