body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background-color: #0d1117;
  color: #c9d1d9;
}

header, section {
  padding: 20px;
  max-width: 900px;
  margin: auto;
}

h1, h2, h3 {
  color: #58a6ff;
}

a {
  color: #58a6ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  padding: 10px;
  border-top: 1px solid #30363d;
  margin-top: 20px;
}