diff --git a/src/main/preload.ts b/src/main/preload.ts
index e274836..1287cb2 100644
--- a/src/main/preload.ts
+++ b/src/main/preload.ts
@@ -5,7 +5,8 @@ import { contextBridge, ipcRenderer, IpcRendererEvent } from 'electron';
 export type Channels =
   | 'mount-webview'
   | 'update-webview-rect'
-  | 'clear-webview';
+  | 'hide-all-webview'
+  | 'clear-all-webview';
 
 const electronHandler = {
   ipcRenderer: {
diff --git a/src/main/webviewManager.ts b/src/main/webviewManager.ts
index 54c62c9..f9ccf43 100644
--- a/src/main/webviewManager.ts
+++ b/src/main/webviewManager.ts
@@ -1,6 +1,11 @@
 import { BrowserView, BrowserWindow, ipcMain, Rectangle } from 'electron';
 
-const webviewMap = new Map<string, BrowserView>();
+interface WebviewInfo {
+  view: BrowserView;
+  hidden: boolean;
+}
+
+const webviewMap = new Map<string, WebviewInfo>();
 
 /**
  * fix rect into correct size
@@ -16,6 +21,8 @@ function fixRect(rect: Rectangle): Rectangle {
 
 export function initWebviewManager(win: BrowserWindow) {
   ipcMain.on('mount-webview', (e, info) => {
+    console.log('[mount-webview] info:', info);
+
     const key = info.key;
     const url = info.url;
     if (!url) {
@@ -23,12 +30,12 @@ export function initWebviewManager(win: BrowserWindow) {
     }
 
     if (webviewMap.has(key)) {
-      win.setTopBrowserView(webviewMap.get(key)!);
+      const webview = webviewMap.get(key)!;
+      win.setTopBrowserView(webview.view);
+      webview.view.setBounds(fixRect(info.rect));
       return;
     }
 
-    console.log('[mount-webview] info:', info);
-
     const view = new BrowserView({
       webPreferences: {
         nodeIntegration: false,
@@ -37,19 +44,27 @@ export function initWebviewManager(win: BrowserWindow) {
     win.addBrowserView(view);
     view.setBounds(fixRect(info.rect));
     view.webContents.loadURL(url);
-    webviewMap.set(key, view);
+    webviewMap.set(key, { view, hidden: false });
   });
 
   ipcMain.on('update-webview-rect', (e, info) => {
     console.log('[update-webview-rect] info:', info);
 
-    Array.from(webviewMap.values()).forEach((view) => {
+    Array.from(webviewMap.values()).forEach(({ view }) => {
       view.setBounds(fixRect(info.rect));
     });
   });
 
-  ipcMain.on('clear-webview', (e) => {
-    console.log('[clear-webview]');
+  ipcMain.on('hide-all-webview', (e) => {
+    console.log('[hide-all-webview]');
+
+    Array.from(webviewMap.values()).forEach((webview) => {
+      hideWebView(webview);
+    });
+  });
+
+  ipcMain.on('clear-all-webview', (e) => {
+    console.log('[clear-all-webview]');
 
     win.getBrowserViews().forEach((view) => {
       win.removeBrowserView(view);
@@ -58,3 +73,37 @@ export function initWebviewManager(win: BrowserWindow) {
     webviewMap.clear();
   });
 }
+
+const HIDDEN_OFFSET = 3000;
+
+/**
+ * Show webview with remove offset in y
+ */
+function showWebView(webview: WebviewInfo) {
+  if (webview.hidden === false) {
+    return;
+  }
+
+  webview.hidden = false;
+  const oldBounds = webview.view.getBounds();
+  webview.view.setBounds({
+    ...oldBounds,
+    y: oldBounds.y - HIDDEN_OFFSET,
+  });
+}
+
+/**
+ * Hide webview with append offset in y
+ */
+function hideWebView(webview: WebviewInfo) {
+  if (webview.hidden === true) {
+    return;
+  }
+
+  webview.hidden = true;
+  const oldBounds = webview.view.getBounds();
+  webview.view.setBounds({
+    ...oldBounds,
+    y: oldBounds.y + HIDDEN_OFFSET,
+  });
+}
diff --git a/src/renderer/components/ClearWebsiteBtn.tsx b/src/renderer/components/ClearWebsiteBtn.tsx
index 63c2206..43bfab4 100644
--- a/src/renderer/components/ClearWebsiteBtn.tsx
+++ b/src/renderer/components/ClearWebsiteBtn.tsx
@@ -11,7 +11,7 @@ export const ClearWebsiteBtn: React.FC = React.memo(() => {
         long={true}
         onClick={() => {
           setSelectedNode(null);
-          window.electron.ipcRenderer.sendMessage('clear-webview');
+          window.electron.ipcRenderer.sendMessage('clear-all-webview');
         }}
       >
         Clear Website
diff --git a/src/renderer/components/SideTree.tsx b/src/renderer/components/SideTree.tsx
index 7c59f88..c3188c1 100644
--- a/src/renderer/components/SideTree.tsx
+++ b/src/renderer/components/SideTree.tsx
@@ -5,6 +5,7 @@ import { generateFakeNode, WebsiteTreeNode, useTreeStore } from '../store/tree';
 import { AddWebsiteBtn } from './AddWebsiteBtn';
 import styled from 'styled-components';
 import { ClearWebsiteBtn } from './ClearWebsiteBtn';
+import { stopPropagation } from '../utils/dom';
 
 const StyledTree = styled(Tree)`
   margin-top: 0.5rem;
@@ -64,7 +65,8 @@ export const SideTree: React.FC = React.memo(() => {
               <StyledMenu>
                 <Menu.Item
                   key="del"
-                  onClick={() => {
+                  onClick={(e) => {
+                    stopPropagation(e);
                     if (props.dataRef && props.dataRef.key) {
                       deleteTreeNode(props.dataRef.key);
                     }
diff --git a/src/renderer/store/tree.ts b/src/renderer/store/tree.ts
index 6b567a1..0b9182c 100644
--- a/src/renderer/store/tree.ts
+++ b/src/renderer/store/tree.ts
@@ -139,6 +139,10 @@ export const useTreeStore = create<TreeStoreState>()(
       },
       deleteTreeNode: (key: string) => {
         set((state) => {
+          if (state.selectedNode && state.selectedNode.key === key) {
+            state.selectedNode = null;
+          }
+
           deleteTreeNode(state.treeData, key);
         });
       },
diff --git a/src/renderer/utils/dom.ts b/src/renderer/utils/dom.ts
new file mode 100644
index 0000000..ce3a6fe
--- /dev/null
+++ b/src/renderer/utils/dom.ts
@@ -0,0 +1,6 @@
+// react stopPropagation
+export function stopPropagation(e: React.BaseSyntheticEvent) {
+  if (e && e.stopPropagation) {
+    e.stopPropagation();
+  }
+}