diff --git a/src/global.d.ts b/src/global.d.ts
index 7cf91818..1e5eeed4 100644
--- a/src/global.d.ts
+++ b/src/global.d.ts
@@ -6,3 +6,18 @@ interface EditorUpdateEvent {
 interface EditorEvents {
 	update: EditorUpdateEvent;
 }
+
+interface TabEvents {
+	select: Tab;
+}
+
+interface Tab {
+	id: string;
+	title: string;
+}
+
+interface State {
+	code: string;
+	mermaid: any;
+	updateEditor: boolean;
+}
diff --git a/src/lib/Card/index.svelte b/src/lib/Card/index.svelte
index fbfee5cf..449e282b 100644
--- a/src/lib/Card/index.svelte
+++ b/src/lib/Card/index.svelte
@@ -1,8 +1,8 @@
-<div class="bg-white p-2 m-2 rounded shadow h-full flex-col">
-	<div class="bg-blue-400 border-gray-400 -p-2">
+<div class={`bg-white m-2 rounded overflow-hidden shadow flex flex-col ${$$props.class}`}>
+	<div class="bg-blue-400 border-gray-400 p-2 flex-none">
 		<slot name="title" />
 	</div>
-	<div class="h-full">
-		<slot name="body" />
+	<div class="flex-grow">
+		<slot />
 	</div>
 </div>
diff --git a/src/lib/Editor/index.svelte b/src/lib/Editor/index.svelte
index af5747ff..76572691 100644
--- a/src/lib/Editor/index.svelte
+++ b/src/lib/Editor/index.svelte
@@ -12,15 +12,12 @@
 	export let editorOptions: monaco.editor.IStandaloneEditorConstructionOptions = {
 		value: ['function x() {', '\tconsole.log("Hello world!");', '}'].join('\n'),
 		language: 'javascript'
+		// automaticLayout: true
 	};
-	const dispatch = createEventDispatcher<EditorEvents>();
-	let resizeHandler: any = () => {};
 
-	export const getResizeHandler = (editor) => {
-		return (node) => editor && editor.layout();
-	};
+	const dispatch = createEventDispatcher<EditorEvents>();
+
 	onMount(async () => {
-		resizeHandler = getResizeHandler(divEl);
 		// @ts-ignore
 		self.MonacoEnvironment = {
 			getWorker: function (_moduleId: any, label: string) {
@@ -40,14 +37,14 @@
 			}
 		};
 		Monaco = await import('monaco-editor');
+		// divEl = document.getElementById('editor') as HTMLDivElement;
 		editor = Monaco.editor.create(divEl, editorOptions);
-
 		editor.onDidChangeModelContent(async () => {
 			dispatch('update', {
 				text: editor.getValue()
 			});
 		});
-		editor.layout();
+		// editor.layout();
 		return () => {
 			editor.dispose();
 		};
diff --git a/src/lib/Tabs/index.svelte b/src/lib/Tabs/index.svelte
new file mode 100644
index 00000000..66db7aef
--- /dev/null
+++ b/src/lib/Tabs/index.svelte
@@ -0,0 +1,30 @@
+<script lang="ts">
+	import { createEventDispatcher } from 'svelte';
+
+	export let tabs: Tab[] = [];
+	export let activeTabID: string = tabs[0].id;
+	const dispatch = createEventDispatcher<TabEvents>();
+	const toggleTabs = (tab: Tab) => {
+		activeTabID = tab.id;
+		dispatch('select', tab);
+	};
+</script>
+
+<div class="flex gap-2">
+	<ul class="flex mb-0 list-none flex-wrap flex-row">
+		{#each tabs as tab}
+			<li class="-mb-2 mr-2 last:mr-0 flex-auto text-center">
+				<!-- svelte-ignore a11y-missing-attribute -->
+				<a
+					class="text-xs font-bold w-16 py-1 shadow-lg rounded-t block leading-normal {activeTabID ===
+					tab.id
+						? 'text-blue-500 bg-white'
+						: 'text-white bg-blue-500'}"
+					on:click={() => toggleTabs(tab)}
+				>
+					{tab.title}
+				</a>
+			</li>
+		{/each}
+	</ul>
+</div>
diff --git a/src/lib/Util/state.ts b/src/lib/Util/state.ts
new file mode 100644
index 00000000..c335e413
--- /dev/null
+++ b/src/lib/Util/state.ts
@@ -0,0 +1,51 @@
+import { writable } from 'svelte/store';
+import { encode, decode } from 'js-base64';
+
+const defaultState: State = {
+	code: `graph TD
+    A[Christmas] -->|Get money| B(Go shopping)
+    B --> C{Let me think}
+    C -->|One| D[Laptop]
+    C -->|Two| E[iPhone]
+    C -->|Three| F[fa:fa-car Car]
+  `,
+	mermaid: 'default',
+	updateEditor: false
+};
+
+export const codeStore = writable(defaultState);
+
+export const loadState = (data: string): void => {
+	let state: State;
+	try {
+		const stateStr = decode(data);
+		console.log('state from url', stateStr);
+		state = JSON.parse(stateStr);
+	} catch (e) {
+		console.error('Init error', e);
+		state = defaultState;
+	}
+	codeStore.set({ ...state, updateEditor: true });
+};
+
+export const updateCodeStore = (newState: State): void => {
+	codeStore.set(newState);
+};
+
+export const updateCode = (code: string, updateEditor: boolean): void => {
+	codeStore.update((state) => {
+		return { ...state, code, updateEditor };
+	});
+};
+
+export const updateConfig = (config: any, updateEditor: boolean): void => {
+	codeStore.update((state) => {
+		return { ...state, mermaid: config, updateEditor };
+	});
+};
+
+export const initURLSubscription = (): void => {
+	codeStore.subscribe((state: State) => {
+		window.location.hash = encode(JSON.stringify(state), true);
+	});
+};
diff --git a/src/lib/Util/util.ts b/src/lib/Util/util.ts
new file mode 100644
index 00000000..6288d9f4
--- /dev/null
+++ b/src/lib/Util/util.ts
@@ -0,0 +1,6 @@
+import { loadState } from './state';
+
+export const loadStateFromURL = (): void => {
+	debugger;
+	loadState(window.location.hash);
+};
diff --git a/src/routes/__layout.svelte b/src/routes/__layout.svelte
index b7cf7021..e688deaa 100644
--- a/src/routes/__layout.svelte
+++ b/src/routes/__layout.svelte
@@ -1,12 +1,11 @@
 <script lang="ts">
-	import Header from '$lib/Header/index.svelte';
 	import '../app.postcss';
 </script>
 
 <div class="h-screen">
 	<!-- <Header /> -->
 
-	<main class="h-full bg-red-300">
+	<main class="h-full">
 		<slot />
 	</main>
 </div>
diff --git a/src/routes/edit.svelte b/src/routes/edit.svelte
index 001cd5ee..96f18fe3 100644
--- a/src/routes/edit.svelte
+++ b/src/routes/edit.svelte
@@ -1,11 +1,35 @@
+<script context="module">
+	export const ssr = false;
+</script>
+
 <script lang="ts">
-	import { onMount } from 'svelte';
 	import Editor from '$lib/Editor/index.svelte';
-	import { encode, decode } from 'js-base64';
 	import Card from '$lib/Card/index.svelte';
-	const updateHandler = async (message: CustomEvent<EditorUpdateEvent>) => {
-		window.location.hash = encode(message.detail.text, true);
+	import Tabs from '$lib/Tabs/index.svelte';
+	import { initURLSubscription, updateCode } from '$lib/Util/state';
+	import { loadStateFromURL } from '$lib/Util/util';
+
+	let selectedTab = 'code';
+	const tabSelectHandler = (message: CustomEvent<Tab>) => {
+		selectedTab = message.detail.id;
 	};
+	const tabs: Tab[] = [
+		{
+			id: 'code',
+			title: 'Code'
+		},
+		{
+			id: 'config',
+			title: 'Config'
+		}
+	];
+
+	const updateHandler = async (message: CustomEvent<EditorUpdateEvent>) => {
+		updateCode(message.detail.text, false);
+	};
+
+	loadStateFromURL();
+	initURLSubscription();
 </script>
 
 <svelte:head>
@@ -13,13 +37,17 @@
 </svelte:head>
 
 <div class="w-2/5 h-screen flex flex-col gap-6">
-	<div class="h-2/3  overflow-hidden">
-		<Card>
-			<h1 slot="title">Hello</h1>
-			<Editor slot="body" on:update={updateHandler} />
-		</Card>
-	</div>
-	<div class="flex-grow shadow bg-white p-4 rounded">
-		<Editor on:update={updateHandler} />
-	</div>
+	<Card class="h-1/2">
+		<div slot="title">
+			<Tabs on:select={tabSelectHandler} {tabs} />
+		</div>
+
+		{#if selectedTab == 'code'}
+			<Editor on:update={updateHandler} />
+		{:else}
+			<Editor on:update={updateHandler} />
+		{/if}
+	</Card>
+
+	<Card class="h-1/3" />
 </div>