/* General layout */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background-color: #f9f9f9;
  color: #333;
  margin: 0 auto;
  max-width: 800px;
  padding: 2rem;
  line-height: 1.6;
}

/* Headings */
h1, h2, h3 {
  color: #222;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.25rem;
}

h3 {
  font-size: 1.25rem;
}

/* Paragraphs and Lists */
p {
  margin: 1rem 0;
}

ul, ol {
  padding-left: 1.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Links */
a {
  color: #007BFF;
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

/* Footer */
footer {
  margin-top: 3rem;
  font-size: 0.875rem;
  color: #888;
  border-top: 1px solid #ddd;
  padding-top: 1.5rem;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    padding: 1rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.1rem;
  }
}