diff --git a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css
index 8086e0d88b3..4e37588f6cd 100644
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css
@@ -348,7 +348,7 @@ body.class-declaration-page .details h3 {
     flex-direction: row;
 }
 .main-grid main {
-    flex: 2.6 1 0;
+    flex: 3 1 0;
     min-width: 240px
 }
 .main-grid nav.toc {