body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 0;
  color: #333;
  line-height: 1.6;
}

header,
footer {
  background-color: #fff;
  padding: 1rem 0;
  text-align: center;
}

.container {
  max-width: 960px;
  margin: 2rem auto;
  background-color: #fff;
  padding: 2rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

header h1,
main h1 {
  text-align: center;
  color: #2c3e50;
}

main h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

h2,
h3,
h4 {
  color: #34495e;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

ul {
  /* margin-left: 1.5rem; */
  margin-bottom: 1rem;
  list-style-type: disc;
}

a {
  color: #2980b9;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.last-updated {
  font-style: italic;
  text-align: center;
}

footer {
  text-align: center;
  font-size: 0.9rem;
  color: #7f8c8d;
  border-top: 1px solid #ccc;
}