Merging PR lindylearn#1746 from lindy-bot

Author: CaseyLabs

apps/unclutter/source/data/domainBlocklistSelectors.json

@@ -2271,6 +2271,7 @@
         "#ArticleAudioIframeScriptComponenta_5031138946959897",
         ".iframeWidth.textboxSize"
     ],
+    "youmath.it": [".collapse-margin_top_lb"],
     "zdnet.com": [
         ".c-socialSharebar",
         ".c-globalDisclosure.g-outer-spacing-bottom-medium",