body {
    margin: 0;
    padding: 0;
    height: 100vh;
    width: 100%;
  overflow-x: hidden;
}
.sidebar {
  position: fixed;
  width: 12rem;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  /* padding: 2rem 0 0; */
  padding: 0;
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, 0.1);
  overflow-y: auto;
}
.sidebar .nav-link {
  font-weight: 500;
  color: #333;
  padding: 0.5rem 1rem;
}
.sidebar .nav-link.active {
  color: #007bff;
  background-color: rgba(0, 123, 255, 0.1);
}
.sidebar .category-title {
  background-color: rgba(155, 155, 155, 0.1);
  color: #999;
  text-transform: uppercase;
  font-size: 0.9rem;
  font-weight: bold;
  font-style: italic;
}
.content {
  margin-left: 12rem;
  padding: 1rem;
}
.content img {
  width: 100%;
}
.content a {
    background-color: rgba(0, 123, 255, 0.1);
    padding: 0.15rem 0.25rem;
    text-decoration: none;
    border-radius: 3px;
}

@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    position: static;
    padding: 20px 0;
  }
  .content {
    margin-left: 0;
  }
}

h1 {
    margin-bottom: 2rem;
    background-color: #000;
    color: #fff;
    border-radius: 5px;
    padding: 0.15rem 0.5rem;
}

h2 {
    margin-bottom: 1.5rem;
    background-color: #dfdfdf;
    color: #000;
    border-radius: 5px;
    padding: 0.15rem 0.5rem;
}

.print-btn {
    padding: 10px 20px;
    background-color: #0d6efd;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

@media print {
    .print-btn {
        display: none;
    }
}