diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index a92d83838..36d1f62ac 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -528,7 +528,7 @@ removeAllFollowing: "フォローを全解除"
 removeAllFollowingDescription: "{host}からのフォローをすべて解除します。そのインスタンスがもう存在しなくなった場合などに実行してください。"
 userSuspended: "このユーザーは凍結されています。"
 userSilenced: "このユーザーはサイレンスされています。"
-sidebar: "サイドバー"
+menu: "メニュー"
 divider: "分割線"
 addItem: "項目を追加"
 rooms: "ルーム"
@@ -927,9 +927,10 @@ _channel:
   usersCount: "{n}人が参加中"
   notesCount: "{n}投稿があります"
 
-_sidebar:
-  full: "フル"
-  icon: "アイコン"
+_menuDisplay:
+  sideFull: "横"
+  sideIcon: "横(アイコン)"
+  top: "上部"
   hide: "隠す"
 
 _wordMute:
diff --git a/src/client/components/launch-pad.vue b/src/client/components/launch-pad.vue
index 58b74bdae..6f97d4d3a 100644
--- a/src/client/components/launch-pad.vue
+++ b/src/client/components/launch-pad.vue
@@ -36,7 +36,7 @@
 <script lang="ts">
 import { defineComponent } from 'vue';
 import MkModal from '@client/components/ui/modal.vue';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import { instanceName } from '@client/config';
 
 export default defineComponent({
@@ -48,7 +48,7 @@ export default defineComponent({
 
 	data() {
 		return {
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			items: [],
 			instanceName,
 		};
diff --git a/src/client/components/ui/container.vue b/src/client/components/ui/container.vue
index 2e8eea713..194009909 100644
--- a/src/client/components/ui/container.vue
+++ b/src/client/components/ui/container.vue
@@ -191,6 +191,8 @@ export default defineComponent({
 	}
 
 	> .content {
+		--stickyTop: 0px;
+
 		&.omitted {
 			position: relative;
 			max-height: var(--maxHeight);
diff --git a/src/client/components/widgets.vue b/src/client/components/widgets.vue
index 790ca5611..0baef8656 100644
--- a/src/client/components/widgets.vue
+++ b/src/client/components/widgets.vue
@@ -43,6 +43,7 @@ export default defineComponent({
 
 	props: {
 		widgets: {
+			type: Array,
 			required: true,
 		},
 		edit: {
diff --git a/src/client/sidebar.ts b/src/client/menu.ts
similarity index 99%
rename from src/client/sidebar.ts
rename to src/client/menu.ts
index 7686da10b..8a9f4d4ac 100644
--- a/src/client/sidebar.ts
+++ b/src/client/menu.ts
@@ -5,7 +5,7 @@ import { i18n } from '@client/i18n';
 import { $i } from './account';
 import { unisonReload } from '@client/scripts/unison-reload';
 
-export const sidebarDef = {
+export const menuDef = {
 	notifications: {
 		title: 'notifications',
 		icon: 'fas fa-bell',
diff --git a/src/client/pages/settings/index.vue b/src/client/pages/settings/index.vue
index 8a0171a6e..17b373fcd 100644
--- a/src/client/pages/settings/index.vue
+++ b/src/client/pages/settings/index.vue
@@ -26,7 +26,7 @@
 				<template #label>{{ $ts.clientSettings }}</template>
 				<FormLink :active="page === 'general'" replace to="/settings/general"><template #icon><i class="fas fa-cogs"></i></template>{{ $ts.general }}</FormLink>
 				<FormLink :active="page === 'theme'" replace to="/settings/theme"><template #icon><i class="fas fa-palette"></i></template>{{ $ts.theme }}</FormLink>
-				<FormLink :active="page === 'sidebar'" replace to="/settings/sidebar"><template #icon><i class="fas fa-list-ul"></i></template>{{ $ts.sidebar }}</FormLink>
+				<FormLink :active="page === 'menu'" replace to="/settings/menu"><template #icon><i class="fas fa-list-ul"></i></template>{{ $ts.menu }}</FormLink>
 				<FormLink :active="page === 'sounds'" replace to="/settings/sounds"><template #icon><i class="fas fa-music"></i></template>{{ $ts.sounds }}</FormLink>
 				<FormLink :active="page === 'plugin'" replace to="/settings/plugin"><template #icon><i class="fas fa-plug"></i></template>{{ $ts.plugins }}</FormLink>
 			</FormGroup>
@@ -121,7 +121,7 @@ export default defineComponent({
 				case 'theme': return defineAsyncComponent(() => import('./theme.vue'));
 				case 'theme/install': return defineAsyncComponent(() => import('./theme.install.vue'));
 				case 'theme/manage': return defineAsyncComponent(() => import('./theme.manage.vue'));
-				case 'sidebar': return defineAsyncComponent(() => import('./sidebar.vue'));
+				case 'menu': return defineAsyncComponent(() => import('./menu.vue'));
 				case 'sounds': return defineAsyncComponent(() => import('./sounds.vue'));
 				case 'custom-css': return defineAsyncComponent(() => import('./custom-css.vue'));
 				case 'deck': return defineAsyncComponent(() => import('./deck.vue'));
diff --git a/src/client/pages/settings/sidebar.vue b/src/client/pages/settings/menu.vue
similarity index 73%
rename from src/client/pages/settings/sidebar.vue
rename to src/client/pages/settings/menu.vue
index d91cae42f..4b315145e 100644
--- a/src/client/pages/settings/sidebar.vue
+++ b/src/client/pages/settings/menu.vue
@@ -1,18 +1,18 @@
 <template>
 <FormBase>
-	<FormTextarea v-model:value="items" tall>
-		<span>{{ $ts.sidebar }}</span>
+	<FormTextarea v-model:value="items" tall manual-save>
+		<span>{{ $ts.menu }}</span>
 		<template #desc><button class="_textButton" @click="addItem">{{ $ts.addItem }}</button></template>
 	</FormTextarea>
 
-	<FormRadios v-model="sidebarDisplay">
+	<FormRadios v-model="menuDisplay">
 		<template #desc>{{ $ts.display }}</template>
-		<option value="full">{{ $ts._sidebar.full }}</option>
-		<option value="icon">{{ $ts._sidebar.icon }}</option>
-		<!-- <MkRadio v-model="sidebarDisplay" value="hide" disabled>{{ $ts._sidebar.hide }}</MkRadio>--> <!-- TODO: サイドバーを完全に隠せるようにすると、別途ハンバーガーボタンのようなものをUIに表示する必要があり面倒 -->
+		<option value="sideFull">{{ $ts._menuDisplay.sideFull }}</option>
+		<option value="sideIcon">{{ $ts._menuDisplay.sideIcon }}</option>
+		<option value="top">{{ $ts._menuDisplay.top }}</option>
+		<!-- <MkRadio v-model="menuDisplay" value="hide" disabled>{{ $ts._menuDisplay.hide }}</MkRadio>--> <!-- TODO: サイドバーを完全に隠せるようにすると、別途ハンバーガーボタンのようなものをUIに表示する必要があり面倒 -->
 	</FormRadios>
 
-	<FormButton @click="save()" primary><i class="fas fa-save"></i> {{ $ts.save }}</FormButton>
 	<FormButton @click="reset()" danger><i class="fas fa-redo"></i> {{ $ts.default }}</FormButton>
 </FormBase>
 </template>
@@ -26,7 +26,7 @@ import FormBase from '@client/components/form/base.vue';
 import FormGroup from '@client/components/form/group.vue';
 import FormButton from '@client/components/form/button.vue';
 import * as os from '@client/os';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import { defaultStore } from '@client/store';
 import * as symbols from '@client/symbols';
 import { unisonReload } from '@client/scripts/unison-reload';
@@ -44,11 +44,11 @@ export default defineComponent({
 	data() {
 		return {
 			[symbols.PAGE_INFO]: {
-				title: this.$ts.sidebar,
+				title: this.$ts.menu,
 				icon: 'fas fa-list-ul'
 			},
-			menuDef: sidebarDef,
-			items: '',
+			menuDef: menuDef,
+			items: defaultStore.state.menu.join('\n'),
 		}
 	},
 
@@ -57,11 +57,17 @@ export default defineComponent({
 			return this.items.trim().split('\n').filter(x => x.trim() !== '');
 		},
 
-		sidebarDisplay: defaultStore.makeGetterSetter('sidebarDisplay')
+		menuDisplay: defaultStore.makeGetterSetter('menuDisplay')
 	},
 
-	created() {
-		this.items = this.$store.state.menu.join('\n');
+	watch: {
+		menuDisplay() {
+			this.reloadAsk();
+		},
+
+		items() {
+			this.save();
+		},
 	},
 
 	mounted() {
@@ -85,7 +91,6 @@ export default defineComponent({
 			});
 			if (canceled) return;
 			this.items = [...this.splited, item].join('\n');
-			this.save();
 		},
 
 		save() {
@@ -96,7 +101,6 @@ export default defineComponent({
 		reset() {
 			this.$store.reset('menu');
 			this.items = this.$store.state.menu.join('\n');
-			this.reloadAsk();
 		},
 
 		async reloadAsk() {
diff --git a/src/client/scripts/sticky-sidebar.ts b/src/client/scripts/sticky-sidebar.ts
index 18670bc03..c67b8f37a 100644
--- a/src/client/scripts/sticky-sidebar.ts
+++ b/src/client/scripts/sticky-sidebar.ts
@@ -7,8 +7,9 @@ export class StickySidebar {
 	private isTop = false;
 	private isBottom = false;
 	private offsetTop: number;
+	private globalHeaderHeight: number = 59;
 
-	constructor(container: StickySidebar['container'], marginTop = 0) {
+	constructor(container: StickySidebar['container'], marginTop = 0, globalHeaderHeight = 0) {
 		this.container = container;
 		this.el = this.container.children[0] as HTMLElement;
 		this.el.style.position = 'sticky';
@@ -16,30 +17,31 @@ export class StickySidebar {
 		this.container.prepend(this.spacer);
 		this.marginTop = marginTop;
 		this.offsetTop = this.container.getBoundingClientRect().top;
+		this.globalHeaderHeight = globalHeaderHeight;
 	}
 
 	public calc(scrollTop: number) {
 		if (scrollTop > this.lastScrollTop) { // downscroll
-			const overflow = Math.max(0, (this.el.clientHeight + this.marginTop) - window.innerHeight);
+			const overflow = Math.max(0, this.globalHeaderHeight + (this.el.clientHeight + this.marginTop) - window.innerHeight);
 			this.el.style.bottom = null;
-			this.el.style.top = `${-overflow + this.marginTop}px`;
+			this.el.style.top = `${-overflow + this.marginTop + this.globalHeaderHeight}px`;
 
 			this.isBottom = (scrollTop + window.innerHeight) >= (this.el.offsetTop + this.el.clientHeight);
 
 			if (this.isTop) {
 				this.isTop = false;
-				this.spacer.style.marginTop = `${Math.max(0, this.lastScrollTop + this.marginTop - this.offsetTop)}px`;
+				this.spacer.style.marginTop = `${Math.max(0, this.globalHeaderHeight + this.lastScrollTop + this.marginTop - this.offsetTop)}px`;
 			}
 		} else { // upscroll
-			const overflow = (this.el.clientHeight + this.marginTop) - window.innerHeight;
+			const overflow = this.globalHeaderHeight + (this.el.clientHeight + this.marginTop) - window.innerHeight;
 			this.el.style.top = null;
 			this.el.style.bottom = `${-overflow}px`;
 
-			this.isTop = scrollTop <= this.el.offsetTop;
+			this.isTop = scrollTop + this.marginTop + this.globalHeaderHeight <= this.el.offsetTop;
 
 			if (this.isBottom) {
 				this.isBottom = false;
-				this.spacer.style.marginTop = `${this.lastScrollTop + this.marginTop - this.offsetTop - overflow}px`;
+				this.spacer.style.marginTop = `${this.globalHeaderHeight + this.lastScrollTop + this.marginTop - this.offsetTop - overflow}px`;
 			}
 		}
 
diff --git a/src/client/store.ts b/src/client/store.ts
index 07ea1868a..04f9e83c6 100644
--- a/src/client/store.ts
+++ b/src/client/store.ts
@@ -90,6 +90,7 @@ export const defaultStore = markRaw(new Storage('base', {
 		default: [] as {
 			name: string;
 			id: string;
+			place: string;
 			data: Record<string, any>;
 		}[]
 	},
@@ -185,9 +186,9 @@ export const defaultStore = markRaw(new Storage('base', {
 		where: 'device',
 		default: false
 	},
-	sidebarDisplay: {
+	menuDisplay: {
 		where: 'device',
-		default: 'full' as 'full' | 'icon'
+		default: 'sideFull' as 'sideFull' | 'sideIcon' | 'top'
 	},
 	reportError: {
 		where: 'device',
diff --git a/src/client/style.scss b/src/client/style.scss
index dc419bd87..578e7543c 100644
--- a/src/client/style.scss
+++ b/src/client/style.scss
@@ -161,7 +161,7 @@ hr {
 	background: none;
 	border: none;
 	cursor: pointer;
-	color: var(--fg);
+	color: inherit;
 	touch-action: manipulation;
 	tap-highlight-color: transparent;
 	-webkit-tap-highlight-color: transparent;
diff --git a/src/client/ui/_common_/sidebar.vue b/src/client/ui/_common_/sidebar.vue
index df1187714..073907cde 100644
--- a/src/client/ui/_common_/sidebar.vue
+++ b/src/client/ui/_common_/sidebar.vue
@@ -49,7 +49,7 @@ import { defineComponent } from 'vue';
 import { host } from '@client/config';
 import { search } from '@client/scripts/search';
 import * as os from '@client/os';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import { getAccounts, addAccount, login } from '@client/account';
 
 export default defineComponent({
@@ -67,7 +67,7 @@ export default defineComponent({
 			showing: false,
 			accounts: [],
 			connection: null,
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			iconOnly: false,
 			hidden: this.defaultHidden,
 		};
@@ -92,7 +92,7 @@ export default defineComponent({
 			this.showing = false;
 		},
 
-		'$store.reactiveState.sidebarDisplay.value'() {
+		'$store.reactiveState.menuDisplay.value'() {
 			this.calcViewState();
 		},
 
@@ -116,7 +116,7 @@ export default defineComponent({
 
 	methods: {
 		calcViewState() {
-			this.iconOnly = (window.innerWidth <= 1279) || (this.$store.state.sidebarDisplay === 'icon');
+			this.iconOnly = (window.innerWidth <= 1279) || (this.$store.state.menuDisplay === 'sideIcon');
 			if (!this.defaultHidden) {
 				this.hidden = (window.innerWidth <= 650);
 			}
diff --git a/src/client/ui/chat/index.vue b/src/client/ui/chat/index.vue
index c28436ed5..d45369e8b 100644
--- a/src/client/ui/chat/index.vue
+++ b/src/client/ui/chat/index.vue
@@ -142,7 +142,7 @@ import XTimeline from './timeline.vue';
 import XHeaderClock from './header-clock.vue';
 import * as os from '@client/os';
 import { router } from '@client/router';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import { search } from '@client/scripts/search';
 import copyToClipboard from '@client/scripts/copy-to-clipboard';
 import { store } from './store';
@@ -190,7 +190,7 @@ export default defineComponent({
 			followedChannels: null,
 			featuredChannels: null,
 			currentChannel: null,
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			sideViewOpening: false,
 			instanceName,
 		};
diff --git a/src/client/ui/deck.vue b/src/client/ui/deck.vue
index 935445a54..4b0189ba7 100644
--- a/src/client/ui/deck.vue
+++ b/src/client/ui/deck.vue
@@ -37,7 +37,7 @@ import DeckColumnCore from '@client/ui/deck/column-core.vue';
 import XSidebar from '@client/ui/_common_/sidebar.vue';
 import { getScrollContainer } from '@client/scripts/scroll';
 import * as os from '@client/os';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import XCommon from './_common_/common.vue';
 import { deckStore, addColumn, loadDeck } from './deck/deck-store';
 
@@ -60,7 +60,7 @@ export default defineComponent({
 		return {
 			deckStore,
 			host: host,
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			wallpaper: localStorage.getItem('wallpaper') != null,
 		};
 	},
diff --git a/src/client/ui/default.header.vue b/src/client/ui/default.header.vue
new file mode 100644
index 000000000..a67883020
--- /dev/null
+++ b/src/client/ui/default.header.vue
@@ -0,0 +1,274 @@
+<template>
+<div class="azykntjl">
+	<div class="body">
+		<div class="left">
+			<MkA class="item index" active-class="active" to="/" exact v-click-anime v-tooltip="$ts.timeline">
+				<i class="fas fa-home fa-fw"></i>
+			</MkA>
+			<template v-for="item in menu">
+				<div v-if="item === '-'" class="divider"></div>
+				<component v-else-if="menuDef[item] && (menuDef[item].show !== false)" :is="menuDef[item].to ? 'MkA' : 'button'" class="item _button" :class="item" active-class="active" v-on="menuDef[item].action ? { click: menuDef[item].action } : {}" :to="menuDef[item].to" v-click-anime v-tooltip="$ts[menuDef[item].title]">
+					<i class="fa-fw" :class="menuDef[item].icon"></i>
+					<span v-if="menuDef[item].indicated" class="indicator"><i class="fas fa-circle"></i></span>
+				</component>
+			</template>
+			<div class="divider"></div>
+			<MkA v-if="$i.isAdmin || $i.isModerator" class="item" active-class="active" to="/instance" :behavior="settingsWindowed ? 'modalWindow' : null" v-click-anime v-tooltip="$ts.instance">
+				<i class="fas fa-server fa-fw"></i>
+			</MkA>
+			<button class="item _button" @click="more" v-click-anime>
+				<i class="fas fa-ellipsis-h fa-fw"></i>
+				<span v-if="otherNavItemIndicated" class="indicator"><i class="fas fa-circle"></i></span>
+			</button>
+		</div>
+		<div class="right">
+			<MkA class="item" active-class="active" to="/settings" :behavior="settingsWindowed ? 'modalWindow' : null" v-click-anime v-tooltip="$ts.settings">
+				<i class="fas fa-cog fa-fw"></i>
+			</MkA>
+			<button class="item _button account" @click="openAccountMenu" v-click-anime>
+				<MkAvatar :user="$i" class="avatar"/><MkAcct class="acct" :user="$i"/>
+			</button>
+			<div class="post" @click="post">
+				<MkButton class="button" primary full>
+					<i class="fas fa-pencil-alt fa-fw"></i>
+				</MkButton>
+			</div>
+		</div>
+	</div>
+</div>
+</template>
+
+<script lang="ts">
+import { defineComponent } from 'vue';
+import { host } from '@client/config';
+import { search } from '@client/scripts/search';
+import * as os from '@client/os';
+import { menuDef } from '@client/menu';
+import { getAccounts, addAccount, login } from '@client/account';
+import MkButton from '@client/components/ui/button.vue';
+
+export default defineComponent({
+	components: {
+		MkButton,
+	},
+
+	data() {
+		return {
+			host: host,
+			accounts: [],
+			connection: null,
+			menuDef: menuDef,
+			settingsWindowed: false,
+		};
+	},
+
+	computed: {
+		menu(): string[] {
+			return this.$store.state.menu;
+		},
+
+		otherNavItemIndicated(): boolean {
+			for (const def in this.menuDef) {
+				if (this.menu.includes(def)) continue;
+				if (this.menuDef[def].indicated) return true;
+			}
+			return false;
+		},
+	},
+
+	watch: {
+		'$store.reactiveState.menuDisplay.value'() {
+			this.calcViewState();
+		},
+	},
+
+	created() {
+		window.addEventListener('resize', this.calcViewState);
+		this.calcViewState();
+	},
+
+	methods: {
+		calcViewState() {
+			this.settingsWindowed = (window.innerWidth > 1400);
+		},
+
+		post() {
+			os.post();
+		},
+
+		search() {
+			search();
+		},
+
+		async openAccountMenu(ev) {
+			const storedAccounts = getAccounts().filter(x => x.id !== this.$i.id);
+			const accountsPromise = os.api('users/show', { userIds: storedAccounts.map(x => x.id) });
+
+			const accountItemPromises = storedAccounts.map(a => new Promise(res => {
+				accountsPromise.then(accounts => {
+					const account = accounts.find(x => x.id === a.id);
+					if (account == null) return res(null);
+					res({
+						type: 'user',
+						user: account,
+						action: () => { this.switchAccount(account); }
+					});
+				});
+			}));
+
+			os.modalMenu([...[{
+				type: 'link',
+				text: this.$ts.profile,
+				to: `/@${ this.$i.username }`,
+				avatar: this.$i,
+			}, null, ...accountItemPromises, {
+				icon: 'fas fa-plus',
+				text: this.$ts.addAccount,
+				action: () => {
+					os.modalMenu([{
+						text: this.$ts.existingAccount,
+						action: () => { this.addAccount(); },
+					}, {
+						text: this.$ts.createAccount,
+						action: () => { this.createAccount(); },
+					}], ev.currentTarget || ev.target);
+				},
+			}]], ev.currentTarget || ev.target, {
+				align: 'left'
+			});
+		},
+
+		more(ev) {
+			os.popup(import('@client/components/launch-pad.vue'), {}, {
+			}, 'closed');
+		},
+
+		addAccount() {
+			os.popup(import('@client/components/signin-dialog.vue'), {}, {
+				done: res => {
+					addAccount(res.id, res.i);
+					os.success();
+				},
+			}, 'closed');
+		},
+
+		createAccount() {
+			os.popup(import('@client/components/signup-dialog.vue'), {}, {
+				done: res => {
+					addAccount(res.id, res.i);
+					this.switchAccountWithToken(res.i);
+				},
+			}, 'closed');
+		},
+
+		switchAccount(account: any) {
+			const storedAccounts = getAccounts();
+			const token = storedAccounts.find(x => x.id === account.id).token;
+			this.switchAccountWithToken(token);
+		},
+
+		switchAccountWithToken(token: string) {
+			login(token);
+		},
+	}
+});
+</script>
+
+<style lang="scss" scoped>
+.azykntjl {
+	$height: 60px;
+	$avatar-size: 32px;
+	$avatar-margin: 8px;
+
+	position: sticky;
+	top: 0;
+	z-index: 1000;
+	width: 100%;
+	height: $height;
+	background-color: var(--bg);
+
+	> .body {
+		max-width: 1380px;
+		margin: 0 auto;
+		display: flex;
+
+		> .right,
+		> .left {
+
+			> .item {
+				position: relative;
+				font-size: 0.9em;
+				display: inline-block;
+				padding: 0 12px;
+				line-height: $height;
+
+				> i,
+				> .avatar {
+					margin-right: 0;
+				}
+
+				> i {
+					left: 10px;
+				}
+
+				> .avatar {
+					width: $avatar-size;
+					height: $avatar-size;
+					vertical-align: middle;
+				}
+
+				> .indicator {
+					position: absolute;
+					top: 0;
+					left: 0;
+					color: var(--navIndicator);
+					font-size: 8px;
+					animation: blink 1s infinite;
+				}
+
+				&:hover {
+					text-decoration: none;
+					color: var(--navHoverFg);
+				}
+
+				&.active {
+					color: var(--navActive);
+				}
+			}
+
+			> .divider {
+				display: inline-block;
+				height: 16px;
+				margin: 0 10px;
+				border-right: solid 0.5px var(--divider);
+			}
+
+			> .post {
+				display: inline-block;
+			
+				> .button {
+					width: 40px;
+					height: 40px;
+					padding: 0;
+					min-width: 0;
+				}
+			}
+
+			> .account {
+				display: inline-flex;
+				align-items: center;
+				vertical-align: top;
+				margin-right: 8px;
+
+				> .acct {
+					margin-left: 8px;
+				}
+			}
+		}
+
+		> .right {
+			margin-left: auto;
+		}
+	}
+}
+</style>
diff --git a/src/client/ui/default.sidebar.vue b/src/client/ui/default.sidebar.vue
index c7e2d30c7..2e0336878 100644
--- a/src/client/ui/default.sidebar.vue
+++ b/src/client/ui/default.sidebar.vue
@@ -45,7 +45,7 @@ import { defineComponent } from 'vue';
 import { host } from '@client/config';
 import { search } from '@client/scripts/search';
 import * as os from '@client/os';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import { getAccounts, addAccount, login } from '@client/account';
 import MkButton from '@client/components/ui/button.vue';
 import { StickySidebar } from '@client/scripts/sticky-sidebar';
@@ -62,7 +62,7 @@ export default defineComponent({
 			host: host,
 			accounts: [],
 			connection: null,
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			iconOnly: false,
 			settingsWindowed: false,
 		};
@@ -83,7 +83,7 @@ export default defineComponent({
 	},
 
 	watch: {
-		'$store.reactiveState.sidebarDisplay.value'() {
+		'$store.reactiveState.menuDisplay.value'() {
 			this.calcViewState();
 		},
 
@@ -108,7 +108,7 @@ export default defineComponent({
 
 	methods: {
 		calcViewState() {
-			this.iconOnly = (window.innerWidth <= 1400) || (this.$store.state.sidebarDisplay === 'icon');
+			this.iconOnly = (window.innerWidth <= 1400) || (this.$store.state.menuDisplay === 'sideIcon');
 			this.settingsWindowed = (window.innerWidth > 1400);
 		},
 
diff --git a/src/client/ui/default.vue b/src/client/ui/default.vue
index 3c87bf7ab..f18685d78 100644
--- a/src/client/ui/default.vue
+++ b/src/client/ui/default.vue
@@ -1,9 +1,16 @@
 <template>
 <div class="mk-app" :class="{ wallpaper, isMobile }">
-	<div class="columns" :class="{ fullView }">
-		<div class="sidebar" ref="sidebar" v-if="!isMobile">
-			<XSidebar/>
-		</div>
+	<XHeaderMenu v-if="showMenuOnTop"/>
+
+	<div class="columns" :class="{ fullView, withGlobalHeader: showMenuOnTop }">
+		<template v-if="!isMobile">
+			<div class="sidebar" v-if="!showMenuOnTop">
+				<XSidebar/>
+			</div>
+			<div class="widgets left" ref="widgetsLeft" v-else>
+				<XWidgets @mounted="attachSticky('widgetsLeft')" :place="'left'"/>
+			</div>
+		</template>
 
 		<main class="main _panel" @contextmenu.stop="onContextmenu">
 			<header class="header" @click="onHeaderClick">
@@ -20,8 +27,8 @@
 			</div>
 		</main>
 
-		<div v-if="isDesktop" class="widgets" ref="widgets">
-			<XWidgets @mounted="attachSticky"/>
+		<div v-if="isDesktop" class="widgets right" ref="widgetsRight">
+			<XWidgets @mounted="attachSticky('widgetsRight')" :place="null"/>
 		</div>
 	</div>
 
@@ -60,7 +67,7 @@ import XDrawerSidebar from '@client/ui/_common_/sidebar.vue';
 import XCommon from './_common_/common.vue';
 import XHeader from './_common_/header.vue';
 import * as os from '@client/os';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import * as symbols from '@client/symbols';
 
 const DESKTOP_THRESHOLD = 1100;
@@ -72,13 +79,14 @@ export default defineComponent({
 		XSidebar,
 		XDrawerSidebar,
 		XHeader,
+		XHeaderMenu: defineAsyncComponent(() => import('./default.header.vue')),
 		XWidgets: defineAsyncComponent(() => import('./default.widgets.vue')),
 	},
 
 	data() {
 		return {
 			pageInfo: null,
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			isMobile: window.innerWidth <= MOBILE_THRESHOLD,
 			isDesktop: window.innerWidth >= DESKTOP_THRESHOLD,
 			widgetsShowing: false,
@@ -94,6 +102,10 @@ export default defineComponent({
 				if (this.menuDef[def].indicated) return true;
 			}
 			return false;
+		},
+
+		showMenuOnTop(): boolean {
+			return !this.isMobile && this.$store.state.menuDisplay === 'top';
 		}
 	},
 
@@ -130,8 +142,8 @@ export default defineComponent({
 			}
 		},
 
-		attachSticky() {
-			const sticky = new StickySidebar(this.$refs.widgets, 16);
+		attachSticky(ref) {
+			const sticky = new StickySidebar(this.$refs[ref], this.$store.state.menuDisplay === 'top' ? 0 : 16, this.$store.state.menuDisplay === 'top' ? 60 : 0); // TODO: ヘッダーの高さを60pxと決め打ちしているのを直す
 			window.addEventListener('scroll', () => {
 				sticky.calc(window.scrollY);
 			}, { passive: true });
@@ -285,7 +297,7 @@ export default defineComponent({
 			> .header {
 				position: sticky;
 				z-index: 1000;
-				top: 0;
+				top: var(--globalHeaderHeight, 0px);
 				height: $header-height;
 				line-height: $header-height;
 				-webkit-backdrop-filter: blur(32px);
@@ -296,7 +308,7 @@ export default defineComponent({
 
 			> .content {
 				background: var(--bg);
-				--stickyTop: #{$header-height};
+				--stickyTop: calc(var(--globalHeaderHeight, 0px) + #{$header-height});
 			}
 
 			@media (max-width: 850px) {
@@ -317,12 +329,31 @@ export default defineComponent({
 			@media (max-width: $widgets-hide-threshold) {
 				display: none;
 			}
+
+			&.left {
+				margin-right: 16px;
+			}
 		}
 
 		> .sidebar {
 			margin-top: 16px;
 		}
 
+		&.withGlobalHeader {
+			--globalHeaderHeight: 60px; // TODO: 60pxと決め打ちしているのを直す
+
+			> .main {
+				margin-top: 2px;
+				border-radius: var(--radius);
+				box-shadow: 0 0 0 2px var(--divider);
+			}
+
+			> .widgets {
+				--stickyTop: var(--globalHeaderHeight);
+				margin-top: 0px;
+			}
+		}
+
 		@media (max-width: 850px) {
 			margin: 0;
 
diff --git a/src/client/ui/default.widgets.vue b/src/client/ui/default.widgets.vue
index cf5d1e07c..0bacc83d5 100644
--- a/src/client/ui/default.widgets.vue
+++ b/src/client/ui/default.widgets.vue
@@ -1,6 +1,6 @@
 <template>
 <div class="ddiqwdnk">
-	<XWidgets class="widgets" :edit="editMode" :widgets="$store.reactiveState.widgets.value" @add-widget="addWidget" @remove-widget="removeWidget" @update-widget="updateWidget" @update-widgets="updateWidgets" @exit="editMode = false"/>
+	<XWidgets class="widgets" :edit="editMode" :widgets="$store.reactiveState.widgets.value.filter(w => w.place === place)" @add-widget="addWidget" @remove-widget="removeWidget" @update-widget="updateWidget" @update-widgets="updateWidgets" @exit="editMode = false"/>
 	<MkAd class="a" prefer="square"/>
 
 	<button v-if="editMode" @click="editMode = false" class="_textButton edit" style="font-size: 0.9em;"><i class="fas fa-check"></i> {{ $ts.editWidgetsExit }}</button>
@@ -11,13 +11,18 @@
 <script lang="ts">
 import { defineComponent, defineAsyncComponent } from 'vue';
 import XWidgets from '@client/components/widgets.vue';
-import * as os from '@client/os';
 
 export default defineComponent({
 	components: {
 		XWidgets
 	},
 
+	props: {
+		place: {
+			type: String,
+		}
+	},
+
 	emits: ['mounted'],
 
 	data() {
@@ -34,7 +39,7 @@ export default defineComponent({
 		addWidget(widget) {
 			this.$store.set('widgets', [{
 				...widget,
-				place: null,
+				place: this.place,
 			}, ...this.$store.state.widgets]);
 		},
 
@@ -50,7 +55,10 @@ export default defineComponent({
 		},
 
 		updateWidgets(widgets) {
-			this.$store.set('widgets', widgets);
+			this.$store.set('widgets', [
+				...this.$store.state.widgets.filter(w => w.place !== this.place),
+				...widgets
+			]);
 		}
 	}
 });
diff --git a/src/client/ui/desktop.vue b/src/client/ui/desktop.vue
index a60aed684..b256527a4 100644
--- a/src/client/ui/desktop.vue
+++ b/src/client/ui/desktop.vue
@@ -13,7 +13,7 @@ import { search } from '@client/scripts/search';
 import XCommon from './_common_/common.vue';
 import * as os from '@client/os';
 import XSidebar from '@client/ui/_common_/sidebar.vue';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import { ColdDeviceStorage } from '@client/store';
 
 export default defineComponent({
@@ -33,7 +33,7 @@ export default defineComponent({
 	data() {
 		return {
 			host: host,
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			wallpaper: localStorage.getItem('wallpaper') != null,
 		};
 	},
diff --git a/src/client/ui/universal.vue b/src/client/ui/universal.vue
index fb67ea898..1e8c4b36d 100644
--- a/src/client/ui/universal.vue
+++ b/src/client/ui/universal.vue
@@ -61,7 +61,7 @@ import XCommon from './_common_/common.vue';
 import XHeader from './_common_/header.vue';
 import XSide from './default.side.vue';
 import * as os from '@client/os';
-import { sidebarDef } from '@client/sidebar';
+import { menuDef } from '@client/menu';
 import * as symbols from '@client/symbols';
 
 const DESKTOP_THRESHOLD = 1100;
@@ -87,7 +87,7 @@ export default defineComponent({
 		return {
 			pageInfo: null,
 			isDesktop: window.innerWidth >= DESKTOP_THRESHOLD,
-			menuDef: sidebarDef,
+			menuDef: menuDef,
 			navHidden: false,
 			widgetsShowing: false,
 			wallpaper: localStorage.getItem('wallpaper') != null,