diff --git a/website/core/PrismTheme.js b/website/core/PrismTheme.js
index a48bea727c5..7f8c4e43d24 100644
--- a/website/core/PrismTheme.js
+++ b/website/core/PrismTheme.js
@@ -1,7 +1,7 @@
-var theme = {
+const theme = {
   plain: {
     color: '#FFFFFF',
-    background: '#282C34',
+    backgroundColor: '#282C34',
   },
   styles: [
     {
diff --git a/website/src/css/customTheme.scss b/website/src/css/customTheme.scss
index f9fccc1fc2e..3ab2ba7bb94 100644
--- a/website/src/css/customTheme.scss
+++ b/website/src/css/customTheme.scss
@@ -300,7 +300,6 @@ hr {
   div[class*="codeBlockContent"] {
     display: inline-grid;
     min-width: 100%;
-    background-color: var(--dark);
   }
 
   div[class*="codeBlockLines"] {