diff --git a/packages/docusaurus-theme-classic/src/theme/Layout/index.tsx b/packages/docusaurus-theme-classic/src/theme/Layout/index.tsx
index 44cc033e1c..a08c116765 100644
--- a/packages/docusaurus-theme-classic/src/theme/Layout/index.tsx
+++ b/packages/docusaurus-theme-classic/src/theme/Layout/index.tsx
@@ -48,7 +48,7 @@ export default function Layout(props: Props): ReactNode {
       <div
         id={SkipToContentFallbackId}
         className={clsx(
-          ThemeClassNames.layout.main,
+          ThemeClassNames.layout.main.container,
           ThemeClassNames.wrapper.main,
           styles.mainWrapper,
           wrapperClassName,