diff --git a/asset/css/markbind.css b/asset/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/asset/css/markbind.css
+++ b/asset/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }
diff --git a/test/functional/test_site/expected/markbind/css/markbind.css b/test/functional/test_site/expected/markbind/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/test/functional/test_site/expected/markbind/css/markbind.css
+++ b/test/functional/test_site/expected/markbind/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }
diff --git a/test/functional/test_site_algolia_plugin/expected/markbind/css/markbind.css b/test/functional/test_site_algolia_plugin/expected/markbind/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/test/functional/test_site_algolia_plugin/expected/markbind/css/markbind.css
+++ b/test/functional/test_site_algolia_plugin/expected/markbind/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }
diff --git a/test/functional/test_site_convert/expected/markbind/css/markbind.css b/test/functional/test_site_convert/expected/markbind/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/test/functional/test_site_convert/expected/markbind/css/markbind.css
+++ b/test/functional/test_site_convert/expected/markbind/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }
diff --git a/test/functional/test_site_expressive_layout/expected/markbind/css/markbind.css b/test/functional/test_site_expressive_layout/expected/markbind/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/test/functional/test_site_expressive_layout/expected/markbind/css/markbind.css
+++ b/test/functional/test_site_expressive_layout/expected/markbind/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }
diff --git a/test/functional/test_site_special_tags/expected/markbind/css/markbind.css b/test/functional/test_site_special_tags/expected/markbind/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/test/functional/test_site_special_tags/expected/markbind/css/markbind.css
+++ b/test/functional/test_site_special_tags/expected/markbind/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }
diff --git a/test/functional/test_site_templates/test_default/expected/markbind/css/markbind.css b/test/functional/test_site_templates/test_default/expected/markbind/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/test/functional/test_site_templates/test_default/expected/markbind/css/markbind.css
+++ b/test/functional/test_site_templates/test_default/expected/markbind/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }
diff --git a/test/functional/test_site_templates/test_minimal/expected/markbind/css/markbind.css b/test/functional/test_site_templates/test_minimal/expected/markbind/css/markbind.css
index 13f91e660b..6e3274a5dc 100644
--- a/test/functional/test_site_templates/test_minimal/expected/markbind/css/markbind.css
+++ b/test/functional/test_site_templates/test_minimal/expected/markbind/css/markbind.css
@@ -11,6 +11,10 @@ code {
     word-break: normal;
 }
 
+mark code {
+    background: #ffffffd4;
+}
+
 pre.hljs > code {
     background: none;
 }