diff --git a/extensions/markdown-language-features/media/markdown.css b/extensions/markdown-language-features/media/markdown.css
index 81d66e366b7..ba08621a615 100644
--- a/extensions/markdown-language-features/media/markdown.css
+++ b/extensions/markdown-language-features/media/markdown.css
@@ -205,15 +205,7 @@ pre code {
 
 /** Theming */
 
-.vscode-light pre {
-	background-color: rgba(220, 220, 220, 0.4);
-}
-
-.vscode-dark pre {
-	background-color: rgba(10, 10, 10, 0.4);
-}
-
-.vscode-high-contrast pre {
+pre {
 	background-color: var(--vscode-textCodeBlock-background);
 }
 
diff --git a/src/vs/workbench/contrib/markdown/browser/markdownDocumentRenderer.ts b/src/vs/workbench/contrib/markdown/browser/markdownDocumentRenderer.ts
index 1378d6192a3..0cf38581b03 100644
--- a/src/vs/workbench/contrib/markdown/browser/markdownDocumentRenderer.ts
+++ b/src/vs/workbench/contrib/markdown/browser/markdownDocumentRenderer.ts
@@ -115,15 +115,7 @@ pre code {
 
 /** Theming */
 
-.vscode-light pre {
-	background-color: rgba(220, 220, 220, 0.4);
-}
-
-.vscode-dark pre {
-	background-color: rgba(10, 10, 10, 0.4);
-}
-
-.vscode-high-contrast pre {
+.pre {
 	background-color: var(--vscode-textCodeBlock-background);
 }
 
@@ -150,7 +142,6 @@ pre code {
 .vscode-dark td {
 	border-color: rgba(255, 255, 255, 0.18);
 }
-
 `;
 
 const allowedProtocols = [Schemas.http, Schemas.https, Schemas.command];