diff --git a/web/components/nav/group-nav-bar.tsx b/web/components/nav/group-nav-bar.tsx
new file mode 100644
index 00000000..041d006b
--- /dev/null
+++ b/web/components/nav/group-nav-bar.tsx
@@ -0,0 +1,94 @@
+import { BookOpenIcon, HomeIcon } from '@heroicons/react/outline'
+import { Item } from './sidebar'
+
+import clsx from 'clsx'
+import { trackCallback } from 'web/lib/service/analytics'
+import TrophyIcon from 'web/lib/icons/trophy-icon'
+import { useUser } from 'web/hooks/use-user'
+import NotificationsIcon from '../notifications-icon'
+import router from 'next/router'
+import { userProfileItem } from './nav-bar'
+
+const mobileGroupNavigation = [
+  { name: 'About', key: 'about', icon: BookOpenIcon },
+  { name: 'Markets', key: 'markets', icon: HomeIcon },
+  { name: 'Leaderboard', key: 'leaderboards', icon: TrophyIcon },
+]
+
+const mobileGeneralNavigation = [
+  {
+    name: 'Notifications',
+    key: 'notifications',
+    icon: NotificationsIcon,
+    href: '/notifications',
+  },
+]
+
+export function GroupNavBar(props: {
+  currentPage: string
+  onClick: (key: string) => void
+}) {
+  const { currentPage } = props
+  const user = useUser()
+
+  return (
+    <nav className="fixed inset-x-0 bottom-0 z-20 flex justify-between border-t-2 bg-white text-xs text-gray-700 lg:hidden">
+      {mobileGroupNavigation.map((item) => (
+        <NavBarItem
+          key={item.name}
+          item={item}
+          currentPage={currentPage}
+          onClick={props.onClick}
+        />
+      ))}
+
+      {mobileGeneralNavigation.map((item) => (
+        <NavBarItem
+          key={item.name}
+          item={item}
+          currentPage={currentPage}
+          onClick={() => {
+            router.push(item.href)
+          }}
+        />
+      ))}
+
+      {user && (
+        <NavBarItem
+          key={'profile'}
+          currentPage={currentPage}
+          onClick={() => {
+            router.push(`/${user.username}?tab=trades`)
+          }}
+          item={userProfileItem(user)}
+        />
+      )}
+    </nav>
+  )
+}
+
+function NavBarItem(props: {
+  item: Item
+  currentPage: string
+  onClick: (key: string) => void
+}) {
+  const { item, currentPage } = props
+  const track = trackCallback(
+    `group navbar: ${item.trackingEventName ?? item.name}`
+  )
+
+  return (
+    <button onClick={() => props.onClick(item.key ?? '#')}>
+      <a
+        className={clsx(
+          'block w-full py-1 px-3 text-center hover:bg-indigo-200 hover:text-indigo-700',
+          currentPage === item.key && 'bg-gray-200 text-indigo-700'
+        )}
+        onClick={track}
+      >
+        {item.icon && <item.icon className="my-1 mx-auto h-6 w-6" />}
+        {item.name}
+      </a>
+    </button>
+  )
+}
diff --git a/web/components/nav/group-sidebar.tsx b/web/components/nav/group-sidebar.tsx
new file mode 100644
index 00000000..33784194
--- /dev/null
+++ b/web/components/nav/group-sidebar.tsx
@@ -0,0 +1,87 @@
+import { HomeIcon, BookOpenIcon } from '@heroicons/react/outline'
+import clsx from 'clsx'
+import { useUser } from 'web/hooks/use-user'
+import { ManifoldLogo } from './manifold-logo'
+import { ProfileSummary } from './profile-menu'
+import React from 'react'
+import TrophyIcon from 'web/lib/icons/trophy-icon'
+import { SignInButton } from '../sign-in-button'
+import CornerDownRightIcon from 'web/lib/icons/corner-down-right-icon'
+import NotificationsIcon from '../notifications-icon'
+import { SidebarItem } from './sidebar'
+import { buildArray } from 'common/util/array'
+import { User } from 'common/user'
+
+const groupNavigation = [
+  { name: 'About', key: 'about', icon: BookOpenIcon },
+  { name: 'Markets', key: 'markets', icon: HomeIcon },
+  { name: 'Leaderboard', key: 'leaderboards', icon: TrophyIcon },
+]
+
+const generalNavigation = (user?: User | null) =>
+  buildArray(
+    user && {
+      name: 'Notifications',
+      href: `/notifications`,
+      key: 'notifications',
+      icon: NotificationsIcon,
+    }
+  )
+
+export default function GroupSidebar(props: {
+  groupName: string
+  className?: string
+  onClick: (key: string) => void
+  joinOrAddQuestionsButton: React.ReactNode
+  currentKey: string
+}) {
+  const { className, groupName, currentKey } = props
+
+  const user = useUser()
+
+  return (
+    <nav
+      aria-label="Group Sidebar"
+      className={clsx('flex max-h-[100vh] flex-col', className)}
+    >
+      <ManifoldLogo className="pt-6" twoLine />
+
+      <div className=" min-h-0 shrink flex-col items-stretch gap-1  pt-6 lg:flex ">
+        {user ? (
+          <ProfileSummary user={user} />
+        ) : (
+          <SignInButton className="mb-4" />
+        )}
+      </div>
+
+      <div className={' text-2xl text-indigo-700 sm:mb-1 sm:mt-3'}>
+        {groupName}
+      </div>
+
+      {/* Desktop navigation */}
+      <div className="relative hidden min-h-0 shrink flex-col items-stretch gap-1 pl-6 pb-0 lg:flex">
+        {/* adds a purple CornerDownRightIcon pointing to the sidebaritems */}
+        <CornerDownRightIcon className="absolute left-0 top-0 mt-2 h-6 w-6 text-indigo-700" />
+
+        {groupNavigation.map((item) => (
+          <SidebarItem
+            key={item.key}
+            item={item}
+            currentPage={currentKey}
+            onClick={props.onClick}
+          />
+        ))}
+      </div>
+      {generalNavigation(user).map((item) => (
+        <SidebarItem
+          key={item.key}
+          item={item}
+          currentPage={currentKey}
+          onClick={props.onClick}
+        />
+      ))}
+
+      {props.joinOrAddQuestionsButton}
+    </nav>
+  )
+}
diff --git a/web/components/nav/nav-bar.tsx b/web/components/nav/nav-bar.tsx
index 242d6ff5..14e7d1b0 100644
--- a/web/components/nav/nav-bar.tsx
+++ b/web/components/nav/nav-bar.tsx
@@ -17,6 +17,7 @@ import { useRouter } from 'next/router'
 import NotificationsIcon from 'web/components/notifications-icon'
 import { useIsIframe } from 'web/hooks/use-is-iframe'
 import { trackCallback } from 'web/lib/service/analytics'
+import { User } from 'common/user'
 
 function getNavigation() {
   return [
@@ -34,6 +35,21 @@ const signedOutNavigation = [
   { name: 'Explore', href: '/home', icon: SearchIcon },
 ]
 
+export const userProfileItem = (user: User) => ({
+  name: formatMoney(user.balance),
+  trackingEventName: 'profile',
+  href: `/${user.username}?tab=trades`,
+  icon: () => (
+    <Avatar
+      className="mx-auto my-1"
+      size="xs"
+      username={user.username}
+      avatarUrl={user.avatarUrl}
+      noLink
+    />
+  ),
+})
+
 // From https://codepen.io/chris__sev/pen/QWGvYbL
 export function BottomNavBar() {
   const [sidebarOpen, setSidebarOpen] = useState(false)
@@ -61,20 +77,7 @@ export function BottomNavBar() {
         <NavBarItem
           key={'profile'}
           currentPage={currentPage}
-          item={{
-            name: formatMoney(user.balance),
-            trackingEventName: 'profile',
-            href: `/${user.username}?tab=trades`,
-            icon: () => (
-              <Avatar
-                className="mx-auto my-1"
-                size="xs"
-                username={user.username}
-                avatarUrl={user.avatarUrl}
-                noLink
-              />
-            ),
-          }}
+          item={userProfileItem(user)}
         />
       )}
       <div
@@ -98,7 +101,7 @@ function NavBarItem(props: { item: Item; currentPage: string }) {
   const track = trackCallback(`navbar: ${item.trackingEventName ?? item.name}`)
 
   return (
-    <Link href={item.href}>
+    <Link href={item.href ?? '#'}>
       <a
         className={clsx(
           'block w-full py-1 px-3 text-center hover:bg-indigo-200 hover:text-indigo-700',
diff --git a/web/components/nav/sidebar.tsx b/web/components/nav/sidebar.tsx
index d7adfa28..2a707683 100644
--- a/web/components/nav/sidebar.tsx
+++ b/web/components/nav/sidebar.tsx
@@ -13,7 +13,7 @@ import Router, { useRouter } from 'next/router'
 import { useUser } from 'web/hooks/use-user'
 import { firebaseLogout, User } from 'web/lib/firebase/users'
 import { ManifoldLogo } from './manifold-logo'
-import { MenuButton } from './menu'
+import { MenuButton, MenuItem } from './menu'
 import { ProfileSummary } from './profile-menu'
 import NotificationsIcon from 'web/components/notifications-icon'
 import React from 'react'
@@ -139,7 +139,7 @@ function getMoreMobileNav() {
   }
   if (IS_PRIVATE_MANIFOLD) return [signOut]
 
-  return buildArray<Item>(
+  return buildArray<MenuItem>(
     CHALLENGES_ENABLED && { name: 'Challenges', href: '/challenges' },
     [
       { name: 'Groups', href: '/groups' },
@@ -156,39 +156,59 @@ function getMoreMobileNav() {
 export type Item = {
   name: string
   trackingEventName?: string
-  href: string
+  href?: string
+  key?: string
   icon?: React.ComponentType<{ className?: string }>
 }
 
-function SidebarItem(props: { item: Item; currentPage: string }) {
-  const { item, currentPage } = props
-  return (
-    <Link href={item.href} key={item.name}>
-      <a
-        onClick={trackCallback('sidebar: ' + item.name)}
-        className={clsx(
-          item.href == currentPage
-            ? 'bg-gray-200 text-gray-900'
-            : 'text-gray-600 hover:bg-gray-100',
-          'group flex items-center rounded-md px-3 py-2 text-sm font-medium'
-        )}
-        aria-current={item.href == currentPage ? 'page' : undefined}
-      >
-        {item.icon && (
-          <item.icon
-            className={clsx(
-              item.href == currentPage
-                ? 'text-gray-500'
-                : 'text-gray-400 group-hover:text-gray-500',
-              '-ml-1 mr-3 h-6 w-6 flex-shrink-0'
-            )}
-            aria-hidden="true"
-          />
-        )}
-        <span className="truncate">{item.name}</span>
-      </a>
-    </Link>
+export function SidebarItem(props: {
+  item: Item
+  currentPage: string
+  onClick?: (key: string) => void
+}) {
+  const { item, currentPage, onClick } = props
+  const isCurrentPage =
+    item.href != null ? item.href === currentPage : item.key === currentPage
+
+  const sidebarItem = (
+    <a
+      onClick={trackCallback('sidebar: ' + item.name)}
+      className={clsx(
+        isCurrentPage
+          ? 'bg-gray-200 text-gray-900'
+          : 'text-gray-600 hover:bg-gray-100',
+        'group flex items-center rounded-md px-3 py-2 text-sm font-medium'
+      )}
+      aria-current={item.href == currentPage ? 'page' : undefined}
+    >
+      {item.icon && (
+        <item.icon
+          className={clsx(
+            isCurrentPage
+              ? 'text-gray-500'
+              : 'text-gray-400 group-hover:text-gray-500',
+            '-ml-1 mr-3 h-6 w-6 flex-shrink-0'
+          )}
+          aria-hidden="true"
+        />
+      )}
+      <span className="truncate">{item.name}</span>
+    </a>
   )
+
+  if (item.href) {
+    return (
+      <Link href={item.href} key={item.name}>
+        {sidebarItem}
+      </Link>
+    )
+  } else {
+    return onClick ? (
+      <button onClick={() => onClick(item.key ?? '#')}>{sidebarItem}</button>
+    ) : (
+      <> </>
+    )
+  }
 }
 
 function SidebarButton(props: {
diff --git a/web/lib/icons/corner-down-right-icon.tsx b/web/lib/icons/corner-down-right-icon.tsx
new file mode 100644
index 00000000..37d61afa
--- /dev/null
+++ b/web/lib/icons/corner-down-right-icon.tsx
@@ -0,0 +1,19 @@
+export default function CornerDownRightIcon(props: { className?: string }) {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="24"
+      height="24"
+      viewBox="0 0 24 24"
+      fill="none"
+      stroke="currentColor"
+      stroke-width="2"
+      stroke-linecap="round"
+      stroke-linejoin="round"
+      className={props.className}
+    >
+      <polyline points="15 10 20 15 15 20"></polyline>
+      <path d="M4 4v7a4 4 0 0 0 4 4h12"></path>
+    </svg>
+  )
+}
diff --git a/web/pages/group/[...slugs]/index.tsx b/web/pages/group/[...slugs]/index.tsx
index f5d68e57..71330ce9 100644
--- a/web/pages/group/[...slugs]/index.tsx
+++ b/web/pages/group/[...slugs]/index.tsx
@@ -1,10 +1,9 @@
 import React, { useState } from 'react'
 import Link from 'next/link'
 import { useRouter } from 'next/router'
-import { toast } from 'react-hot-toast'
+import { toast, Toaster } from 'react-hot-toast'
 
 import { Group, GROUP_CHAT_SLUG } from 'common/group'
-import { Page } from 'web/components/page'
 import { Contract, listContractsByGroupSlug } from 'web/lib/firebase/contracts'
 import {
   addContractToGroup,
@@ -30,7 +29,6 @@ import Custom404 from '../../404'
 import { SEO } from 'web/components/SEO'
 import { Linkify } from 'web/components/linkify'
 import { fromPropz, usePropz } from 'web/hooks/use-propz'
-import { Tabs } from 'web/components/layout/tabs'
 import { LoadingIndicator } from 'web/components/loading-indicator'
 import { Modal } from 'web/components/layout/modal'
 import { ChoicesToggleGroup } from 'web/components/choices-toggle-group'
@@ -51,6 +49,9 @@ import { Spacer } from 'web/components/layout/spacer'
 import { usePost } from 'web/hooks/use-post'
 import { useAdmin } from 'web/hooks/use-admin'
 import { track } from '@amplitude/analytics-browser'
+import GroupSidebar from 'web/components/nav/group-sidebar'
+import { GroupNavBar } from 'web/components/nav/group-nav-bar'
+import { ArrowLeftIcon } from '@heroicons/react/solid'
 
 export const getStaticProps = fromPropz(getStaticPropz)
 export async function getStaticPropz(props: { params: { slugs: string[] } }) {
@@ -144,6 +145,7 @@ export default function GroupPage(props: {
   const user = useUser()
   const isAdmin = useAdmin()
   const memberIds = useMemberIds(group?.id ?? null) ?? props.memberIds
+  const [sidebarIndex, setSidebarIndex] = useState(0)
 
   useSaveReferral(user, {
     defaultReferrerUsername: creator.username,
@@ -157,7 +159,7 @@ export default function GroupPage(props: {
   const isMember = user && memberIds.includes(user.id)
   const maxLeaderboardSize = 50
 
-  const leaderboard = (
+  const leaderboardPage = (
     <Col>
       <div className="mt-4 flex flex-col gap-8 px-4 md:flex-row">
         <GroupLeaderboard
@@ -176,7 +178,7 @@ export default function GroupPage(props: {
     </Col>
   )
 
-  const aboutTab = (
+  const aboutPage = (
     <Col>
       {(group.aboutPostId != null || isCreator || isAdmin) && (
         <GroupAboutPost
@@ -196,74 +198,106 @@ export default function GroupPage(props: {
     </Col>
   )
 
-  const questionsTab = (
-    <ContractSearch
-      user={user}
-      defaultSort={'newest'}
-      defaultFilter={suggestedFilter}
-      additionalFilter={{ groupSlug: group.slug }}
-      persistPrefix={`group-${group.slug}`}
-    />
+  const questionsPage = (
+    <>
+      {/* align the divs to the right */}
+      <div className={' flex justify-end px-2 pb-2 sm:hidden'}>
+        <div>
+          <JoinGroupButton group={group} user={user} />
+        </div>
+      </div>
+      <ContractSearch
+        user={user}
+        defaultSort={'newest'}
+        defaultFilter={suggestedFilter}
+        additionalFilter={{ groupSlug: group.slug }}
+        persistPrefix={`group-${group.slug}`}
+      />
+    </>
   )
 
-  const tabs = [
+  const sidebarPages = [
     {
       badge: `${contractsCount}`,
       title: 'Markets',
-      content: questionsTab,
+      content: questionsPage,
       href: groupPath(group.slug, 'markets'),
+      key: 'markets',
     },
     {
       title: 'Leaderboards',
-      content: leaderboard,
+      content: leaderboardPage,
       href: groupPath(group.slug, 'leaderboards'),
+      key: 'leaderboards',
     },
     {
       title: 'About',
-      content: aboutTab,
+      content: aboutPage,
       href: groupPath(group.slug, 'about'),
+      key: 'about',
     },
   ]
 
-  const tabIndex = tabs
-    .map((t) => t.title.toLowerCase())
-    .indexOf(page ?? 'markets')
+  const pageContent = sidebarPages[sidebarIndex].content
+  const onSidebarClick = (key: string) => {
+    const index = sidebarPages.findIndex((t) => t.key === key)
+    setSidebarIndex(index)
+  }
+
+  const joinOrAddQuestionsButton = (
+    <JoinOrAddQuestionsButtons
+      group={group}
+      user={user}
+      isMember={!!isMember}
+    />
+  )
 
   return (
-    <Page>
-      <SEO
-        title={group.name}
-        description={`Created by ${creator.name}. ${group.about}`}
-        url={groupPath(group.slug)}
-      />
-      <Col className="relative px-3">
-        <Row className={'items-center justify-between gap-4'}>
-          <div className={'sm:mb-1'}>
-            <div
-              className={'line-clamp-1 my-2 text-2xl text-indigo-700 sm:my-3'}
-            >
+    <>
+      <header className="sticky top-0 z-50 w-full pb-2 md:hidden lg:col-span-12">
+        <div className="flex items-center  border-b border-gray-200 bg-white  px-4">
+          <div className="flex-shrink-0">
+            <Link href="/">
+              <a className="text-indigo-700 hover:text-gray-500 ">
+                <ArrowLeftIcon className="h-5 w-5" aria-hidden="true" />
+              </a>
+            </Link>
+          </div>
+          <div className="ml-3">
+            <h1 className="text-lg font-medium text-indigo-700">
               {group.name}
-            </div>
-            <div className={'hidden sm:block'}>
-              <Linkify text={group.about} />
-            </div>
+            </h1>
           </div>
-          <div className="mt-2">
-            <JoinOrAddQuestionsButtons
-              group={group}
-              user={user}
-              isMember={!!isMember}
-            />
-          </div>
-        </Row>
-      </Col>
-      <Tabs
-        currentPageForAnalytics={groupPath(group.slug)}
-        className={'mx-2 mb-0 sm:mb-2'}
-        defaultIndex={tabIndex > 0 ? tabIndex : 0}
-        tabs={tabs}
-      />
-    </Page>
+        </div>
+      </header>
+      <div>
+        <div
+          className={
+            'mx-auto w-full pb-[58px] lg:grid lg:grid-cols-12 lg:gap-x-2 lg:pb-0 xl:max-w-7xl xl:gap-x-8'
+          }
+        >
+          <Toaster />
+          <GroupSidebar
+            groupName={group.name}
+            className="sticky top-0 hidden divide-gray-300 self-start pl-2 lg:col-span-2 lg:flex"
+            onClick={onSidebarClick}
+            joinOrAddQuestionsButton={joinOrAddQuestionsButton}
+            currentKey={sidebarPages[sidebarIndex].key}
+          />
+
+          <SEO
+            title={group.name}
+            description={`Created by ${creator.name}. ${group.about}`}
+            url={groupPath(group.slug)}
+          />
+          <main className={'px-2 pt-1 xl:col-span-8'}>{pageContent}</main>
+        </div>
+        <GroupNavBar
+          currentPage={sidebarPages[sidebarIndex].key}
+          onClick={onSidebarClick}
+        />
+      </div>
+    </>
   )
 }
 
@@ -271,10 +305,11 @@ function JoinOrAddQuestionsButtons(props: {
   group: Group
   user: User | null | undefined
   isMember: boolean
+  className?: string
 }) {
   const { group, user, isMember } = props
   return user && isMember ? (
-    <Row className={'mt-0 justify-end'}>
+    <Row className={'w-full self-start pt-4'}>
       <AddContractButton group={group} user={user} />
     </Row>
   ) : group.anyoneCanJoin ? (
@@ -433,9 +468,9 @@ function AddContractButton(props: { group: Group; user: User }) {
 
   return (
     <>
-      <div className={'flex justify-center'}>
+      <div className={'flex w-full justify-center'}>
         <Button
-          className="whitespace-nowrap"
+          className="w-full whitespace-nowrap"
           size="md"
           color="indigo"
           onClick={() => setOpen(true)}
@@ -534,7 +569,9 @@ function JoinGroupButton(props: {
     <div>
       <button
         onClick={follow}
-        className={'btn-md btn-outline btn whitespace-nowrap normal-case'}
+        className={
+          'btn-md btn-outline btn w-full whitespace-nowrap normal-case'
+        }
       >
         Follow
       </button>