body {
  font-family: Arial, sans-serif;
  display: flex;
}
#sidebar {
  width: 200px;
  background-color: #f1f1f1;
  padding: 20px;
}
#content {
  flex: 1;
  padding: 20px;
}
a {
  text-decoration: none;
  color: #333;
}
a:hover {
  color: #000;
  font-weight: bold;
}