body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #0f172a;
  color: white;
}

header {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(90deg, #0ea5e9, #1e293b);
}

.author {
  opacity: 0.8;
}

.hero {
  display: flex;
  justify-content: center;
  padding: 20px;
}

.hero img {
  width: 200px;
}

main {
  max-width: 800px;
  margin: auto;
  padding: 20px;
}

article {
  background: #1e293b;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 10px;
}

footer {
  text-align: center;
  padding: 20px;
  background: #020617;
}