add position-relative to render subnav bar

packages/app/src/components/Layout/AdminLayout.tsx

@@ -32,7 +32,7 @@ const AdminLayout = ({
     <RawLayout title={title} className={`admin-page ${styles['admin-page']}`}>
       <GrowiNavbar />
 
-      <header className="py-0">
+      <header className="py-0 position-relative">
         <h1 className="title">{title}</h1>
       </header>
       <div id="main" className="main">

packages/app/src/pages/[[...path]].page.tsx

@@ -283,7 +283,7 @@ const GrowiPage: NextPage<Props> = (props: Props) => {
       </Head>
       {/* <BasicLayout title={useCustomTitle(props, t('GROWI'))} className={classNames.join(' ')}> */}
       <BasicLayout title={useCustomTitle(props, 'GROWI')} className={classNames.join(' ')} expandContainer={props.isContainerFluid}>
-        <header className="py-0">
+        <header className="py-0 position-relative">
           <GrowiContextualSubNavigation isLinkSharingDisabled={props.disableLinkSharing} />
         </header>
         <div className="d-edit-none">