diff --git a/examples/with-portals/README.md b/examples/with-portals/README.md
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+++ b/examples/with-portals/README.md
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+# Example with portals
+
+## How to use
+
+Download the example [or clone the repo](https://github.com/zeit/next.js):
+
+```bash
+curl https://codeload.github.com/zeit/next.js/tar.gz/master | tar -xz --strip=2 next.js-master/examples/with-portals
+cd with-portals
+```
+
+Install it and run:
+
+```bash
+npm install
+npm run dev
+```
+
+Deploy it to the cloud with [now](https://zeit.co/now) ([download](https://zeit.co/download))
+
+```bash
+now
+```
+
+## The idea behind the example
+
+This example show how to use the React [Portals](https://reactjs.org/docs/portals.html) feature with Next.js.
diff --git a/examples/with-portals/components/modal.js b/examples/with-portals/components/modal.js
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+++ b/examples/with-portals/components/modal.js
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+import { Component } from 'react'
+import { createPortal } from 'react-dom'
+
+export default class extends Component {
+  componentWillMount () {
+    // get the mount point, is because of this why the modal
+    // can't be used server side, we need access to the DOM
+    this.modalRoot = document.getElementById('modal')
+  }
+
+  render () {
+    const { title, children } = this.props
+
+    return createPortal(
+      <div className='overlay'>
+        <div className='modal'>
+          <h2>{title}</h2>
+          {children}
+        </div>
+        <style jsx global>{`
+          body {
+            /* this avoid any possible scroll on the body */
+            overflow: hidden;
+          }
+        `}</style>
+        <style jsx>{`
+          .overlay {
+            position: fixed;
+            background-color: rgba(0, 0, 0, .7);
+            top: 0;
+            right: 0;
+            bottom: 0;
+            left: 0;
+          }
+
+          .modal {
+            background-color: white;
+            position: absolute;
+            top: 10%;
+            right: 10%;
+            bottom: 10%;
+            left: 10%;
+            padding: 1em;
+          }
+        `}</style>
+      </div>,
+      this.modalRoot
+    )
+  }
+}
diff --git a/examples/with-portals/package.json b/examples/with-portals/package.json
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+++ b/examples/with-portals/package.json
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+{
+  "scripts": {
+    "dev": "next",
+    "build": "next build",
+    "start": "next start"
+  },
+  "dependencies": {
+    "next": "^4.1.4",
+    "react": "^16.2.0",
+    "react-dom": "^16.2.0"
+  }
+}
diff --git a/examples/with-portals/pages/_document.js b/examples/with-portals/pages/_document.js
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+++ b/examples/with-portals/pages/_document.js
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+import Document, { Head, Main, NextScript } from 'next/document'
+
+export default class extends Document {
+  render () {
+    return (
+      <html>
+        <Head />
+        <body>
+          <Main />
+          {/* here we will mount our modal portal */}
+          <div id='modal' />
+          <NextScript />
+        </body>
+      </html>
+    )
+  }
+}
diff --git a/examples/with-portals/pages/index.js b/examples/with-portals/pages/index.js
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+++ b/examples/with-portals/pages/index.js
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+import { Component } from 'react'
+import dynamic from 'next/dynamic'
+
+// we import and render the modal only client side (because we need a DOM)
+const Modal = dynamic(import('../components/modal'), {
+  ssr: false
+})
+
+export default class extends Component {
+  state = { modal: false };
+
+  toggleModal = () => this.setState(state => ({ modal: !state.modal }))
+
+  render () {
+    return (
+      <main>
+        <button type='button' onClick={this.toggleModal}>
+          Open modal
+        </button>
+        {this.state.modal && (
+          <Modal title='My Modal Portal'>
+            <p>This is a portal rendered from Next.js</p>
+            <button type='button' onClick={this.toggleModal}>
+              Close
+            </button>
+          </Modal>
+        )}
+      </main>
+    )
+  }
+}
