/* Keep display mathematics and references readable on small screens. */
main mjx-container[display="true"] {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.25em 0;
}

main .references {
  overflow-wrap: anywhere;
}

/* Keep the contents visible when opening the rendered page locally. */
#TOC > ul.collapse {
  display: block;
}