fix(toc): element can't fully collapse

Stephen Tse

2025-03-31 a21f588c4834168386bf0461df14bf7164b53fb9

 quartz/components/styles/backlinks.scss

@@ -1,4 +1,8 @@
@use "../../styles/variables.scss" as *;

.backlinks {
  flex-direction: column;

  & > h3 {
    font-size: 1rem;
    margin: 0;