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

ul {
  list-style: none;
  padding: 0;
}

li {
  margin: 10px 0;
  padding: 10px;
  background: #f9f9f9;
  border-left: 4px solid #4CAF50; /* Green for CSS theme */
}

a {
  text-decoration: none;
  color: #333;
  font-weight: bold;
}

a:hover {
  color: #4CAF50;
}