diff --git a/packages/docusaurus-theme-classic/src/theme/Layout/styles.module.css b/packages/docusaurus-theme-classic/src/theme/Layout/styles.module.css
index 9f310a54e673..b667fe7911e9 100644
--- a/packages/docusaurus-theme-classic/src/theme/Layout/styles.module.css
+++ b/packages/docusaurus-theme-classic/src/theme/Layout/styles.module.css
@@ -5,7 +5,8 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-:global(html, body) {
+html,
+body {
   height: 100%;
 }