diff --git a/packages/app/src/components/toast.ts b/packages/app/src/components/toast.ts
new file mode 100644
index 0000000000..1ca6fdcfe7
--- /dev/null
+++ b/packages/app/src/components/toast.ts
@@ -0,0 +1,104 @@
+// Copyright: https://github.com/toeverything/blocksuite/commit/8032ef3ab97aefce01664b36502fc392c5db8b78#diff-bf5b41be21936f9165a8400c7f20e24d3dbc49644ba57b9258e0943f0dc1c464
+import { css, html, TemplateResult } from 'lit';
+
+export const sleep = (ms = 0) =>
+  new Promise(resolve => setTimeout(resolve, ms));
+
+let ToastContainer: HTMLDivElement | null = null;
+
+/**
+ * DO NOT USE FOR USER INPUT
+ * See https://stackoverflow.com/questions/494143/creating-a-new-dom-element-from-an-html-string-using-built-in-dom-methods-or-pro/35385518#35385518
+ */
+const htmlToElement = <T extends ChildNode>(html: string | TemplateResult) => {
+  const template = document.createElement('template');
+  if (typeof html === 'string') {
+    html = html.trim(); // Never return a text node of whitespace as the result
+    template.innerHTML = html;
+  } else {
+    const { strings, values } = html;
+    const v = [...values, '']; // + last emtpty part
+    template.innerHTML = strings.reduce((acc, cur, i) => acc + cur + v[i], '');
+  }
+  return template.content.firstChild as T;
+};
+
+const createToastContainer = () => {
+  const styles = css`
+    position: fixed;
+    z-index: 9999;
+    top: 16px;
+    left: 16px;
+    right: 16px;
+    bottom: 78px;
+    pointer-events: none;
+    display: flex;
+    flex-direction: column-reverse;
+    align-items: center;
+  `;
+  const template = html`<div style="${styles}"></div>`;
+  const element = htmlToElement<HTMLDivElement>(template);
+  document.body.appendChild(element);
+  return element;
+};
+
+/**
+ * @example
+ * ```ts
+ * toast('Hello World');
+ * ```
+ */
+export const toast = (message: string, duration = 2500) => {
+  if (!ToastContainer) {
+    ToastContainer = createToastContainer();
+  }
+
+  const styles = css`
+    max-width: 480px;
+    text-align: center;
+    font-family: var(--affine-font-family);
+    font-size: var(--affine-font-sm);
+    padding: 6px 12px;
+    margin: 10px 0 0 0;
+    color: var(--affine-tooltip-color);
+    background: var(--affine-tooltip-background);
+    box-shadow: var(--affine-tooltip-shadow);
+    border-radius: 10px;
+    transition: all 230ms cubic-bezier(0.21, 1.02, 0.73, 1);
+    opacity: 0;
+  `;
+
+  const template = html`<div style="${styles}"></div>`;
+  const element = htmlToElement<HTMLDivElement>(template);
+  // message is not trusted
+  element.textContent = message;
+  ToastContainer.appendChild(element);
+
+  const fadeIn = [
+    {
+      opacity: 0,
+    },
+    { opacity: 1 },
+  ];
+  const options = {
+    duration: 230,
+    easing: 'cubic-bezier(0.21, 1.02, 0.73, 1)',
+    fill: 'forwards' as const,
+  }; // satisfies KeyframeAnimationOptions;
+  element.animate(fadeIn, options);
+
+  setTimeout(async () => {
+    const fadeOut = fadeIn.reverse();
+    const animation = element.animate(fadeOut, options);
+    await animation.finished;
+    element.style.maxHeight = '0';
+    element.style.margin = '0';
+    element.style.padding = '0';
+    // wait for transition
+    await sleep(230);
+    element.remove();
+  }, duration);
+  return element;
+};
+
+export default toast;
diff --git a/packages/app/src/pages/affine.tsx b/packages/app/src/pages/affine.tsx
index a486a254d0..89609d3ada 100644
--- a/packages/app/src/pages/affine.tsx
+++ b/packages/app/src/pages/affine.tsx
@@ -5,6 +5,7 @@ import Modal from '@/ui/modal';
 import { useState } from 'react';
 import { Button } from '@/ui/button';
 import { FavouritedIcon } from '@blocksuite/icons';
+import { toast } from '@/components/toast';
 export const StyledHeader = styled('div')({
   height: '60px',
   width: '100vw',
@@ -38,7 +39,14 @@ const Affine = () => {
       </Modal>
       <Loading />
 
-      <Button icon={<FavouritedIcon />}>click me!</Button>
+      <Button
+        icon={<FavouritedIcon />}
+        onClick={() => {
+          toast('hello, world!!');
+        }}
+      >
+        click me!
+      </Button>
       <Button icon={<FavouritedIcon />} type={'primary'}>
         click me!
       </Button>