Make other replies button stretch along the row

src/components/conversation/conversation.vue

@@ -211,9 +211,11 @@
     border-bottom-color: var(--border, $fallback--border);
     border-radius: 0;
     /* Make the button stretch along the whole row */
-    display: flex;
-    align-items: stretch;
-    flex-direction: column;
+    &, &-inner {
+      display: flex;
+      align-items: stretch;
+      flex-direction: column;
+    }
   }
   .thread-ancestor-dive-box-inner {
     padding: $status-margin;