diff --git a/docs/src/app/pages/component-sidenav/component-sidenav.scss b/docs/src/app/pages/component-sidenav/component-sidenav.scss
index 4ac99781d80b..7d2ad0e0be32 100644
--- a/docs/src/app/pages/component-sidenav/component-sidenav.scss
+++ b/docs/src/app/pages/component-sidenav/component-sidenav.scss
@@ -116,7 +116,7 @@ div.docs-component-viewer-nav-content .mat-nav-list .mat-mdc-list-item .mat-list
 
 @media (max-width: 720px) {
   .docs-component-viewer-sidenav-container {
-    flex: 1 0 auto;
+    flex: 1 0;
   }
 
   .docs-component-sidenav-body-content {