--- a/toolkit/themes/shared/extensions/extensions.inc.css
+++ b/toolkit/themes/shared/extensions/extensions.inc.css
@@ -1085,17 +1085,18 @@ button.button-link:not([disabled="true"]
 }
 
 /*** info UI for add-ons that have been disabled for being unsigned ***/
 
 #show-disabled-unsigned-extensions:not(:hover) {
   background-color: #fcf8ed;
 }
 
-#disabled-unsigned-addons-info {
+#disabled-unsigned-addons-info,
+#legacy-extensions-info {
   margin-bottom: 2em;
   margin-right: 48px;
   margin-left: 48px;
 }
 
 #disabled-unsigned-addons-heading,
 #legacy-extensions-heading {
   font-size: 1.4em;