diff --git a/css/leptonContent.css b/css/leptonContent.css
index c3a67f1..c323219 100644
--- a/css/leptonContent.css
+++ b/css/leptonContent.css
@@ -1,5 +1,11 @@
 @namespace xul url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
 @namespace html url("http://www.w3.org/1999/xhtml");
+/** Compatibility *************************************************************/
+@-moz-document url-prefix("about:preferences") {
+  .content-blocking-warning.info-box-container > hbox > .content-blocking-warning-image {
+    margin-inline-start: -12px !important;
+  }
+}
 /** Video player **************************************************************/
 /* Control Bar Size */
 @supports -moz-bool-pref("userContent.player.size") {
diff --git a/src/contents/_compatibility.scss b/src/contents/_compatibility.scss
new file mode 100644
index 0000000..b095671
--- /dev/null
+++ b/src/contents/_compatibility.scss
@@ -0,0 +1,5 @@
+@include moz-document(url-prefix "about:preferences") {
+  .content-blocking-warning.info-box-container > hbox > .content-blocking-warning-image {
+    margin-inline-start: -12px !important;
+  }
+}
diff --git a/src/leptonContent.scss b/src/leptonContent.scss
index 6c64317..0ef3035 100644
--- a/src/leptonContent.scss
+++ b/src/leptonContent.scss
@@ -11,6 +11,9 @@
 @namespace xul url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
 @namespace html url("http://www.w3.org/1999/xhtml");
 
+/** Compatibility *************************************************************/
+@import "contents/compatibility";
+
 /** Video player **************************************************************/
 @import "contents/video_player";