diff --git a/src/app.css b/src/app.css
index 7d13d40e..a773b8ee 100644
--- a/src/app.css
+++ b/src/app.css
@@ -366,6 +366,11 @@ a[href^='http'][rel*='nofollow']:visited:not(:has(div)) {
   padding: 0;
   border-bottom: var(--hairline-width) solid var(--divider-color);
   --line-dir: var(--to-forward);
+
+  + li:not(.hero) {
+    content-visibility: auto;
+    contain-intrinsic-size: auto 160px;
+  }
 }
 .timeline.flat > li {
   border-bottom: none;