body > *:not(.primary-section),
.primary-section .sidebar,
.primary-section .main-content .book-navigation,
.primary-section .main-content .references-cont,
.primary-section .main-content .article-actions,
.primary-section .main-content .flex-vid,
.primary-section .main-content .btn { display: none; }

.primary-section .main-content a {
  text-decoration: none;
  color: #343434;
}

.primary-section .main-content .flex-img { margin-bottom: 30px; }
.primary-section { padding: 0; }

@page { margin: 100px 30px; }

h2, h3 { break-after: avoid-page; }