diff --git a/_config.yml b/_config.yml
index 4ec4c337..540813af 100755
--- a/_config.yml
+++ b/_config.yml
@@ -275,6 +275,7 @@ articles:
     image_alignment: center # image alignment. left, center
     image_caption: false # Whether to display image caption
     link_icon: true # Whether to display link icon
+    delete_mask: false # Add mask effect to <del> tags, hiding content by default and revealing on hover
     title_alignment: left # Title alignment. left, center
     headings_top_spacing: # Top spacing for headings from h1-h6
       h1: 3.2rem