body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  color: #333;
  text-align: center;
  margin: 0;
  padding: 0;
}

header {
  background: #0d1b2a;
  color: white;
  padding: 2rem;
}

h1 {
  margin: 0;
}

#portfolio video {
  margin: 1rem;
  border: 2px solid #0d1b2a;
  border-radius: 5px;
}

footer {
  margin-top: 2rem;
  padding: 1rem;
  background: #0d1b2a;
  color: white;
}