body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
}

.container {
  max-width: 800px;
  margin: 20px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1, h2 {
  text-align: center;
}

#pdfList {
  list-style: none;
  padding: 0;
}

#pdfList li {
  margin: 10px 0;
  text-decoration: underline;
  color: blue;
}

#pdfList li:hover {
  color: darkblue;
}

.qa-section ul {
  list-style: none;
  padding: 0;
}

.qa-section ul li {
  margin: 10px 0;
  padding: 10px;
  border-bottom: 1px solid #ddd;
}

.qa-section ul li .answer {
  color: gray;
}