fix: embed pdf aspect ratio (closes #1310)

Jacky Zhao

2024-08-06 3938904cd096205b27741538655c3fb18cd401be

 quartz/components/styles/toc.scss

@@ -30,6 +30,7 @@
  overflow: hidden;
  max-height: none;
  transition: max-height 0.5s ease;
  position: relative;

  &.collapsed > .overflow::after {
    opacity: 0;