[changed]: Updated and formatted example in README

Author: PepijnSenders

README.md

@@ -45,22 +45,23 @@ import ReactDOM from 'react-dom';
 import Modal from 'react-modal';
 
 const customStyles = {
-  content : {
-    top                   : '50%',
-    left                  : '50%',
-    right                 : 'auto',
-    bottom                : 'auto',
-    marginRight           : '-50%',
-    transform             : 'translate(-50%, -50%)'
-  }
+  content: {
+    top: '50%',
+    left: '50%',
+    right: 'auto',
+    bottom: 'auto',
+    marginRight: '-50%',
+    transform: 'translate(-50%, -50%)',
+  },
 };
 
 // Make sure to bind modal to your appElement (https://reactcommunity.org/react-modal/accessibility/)
-Modal.setAppElement('#yourAppElement')
+Modal.setAppElement('#yourAppElement');
+
+function App() {
+  let subtitle;
+  const [modalIsOpen, setIsOpen] = React.useState(false);
 
-function App(){
-  var subtitle;
-  const [modalIsOpen,setIsOpen] = React.useState(false);
   function openModal() {
     setIsOpen(true);
   }
@@ -70,34 +71,33 @@ function App(){
     subtitle.style.color = '#f00';
   }
 
-  function closeModal(){
+  function closeModal() {
     setIsOpen(false);
   }
 
-    return (
-      <div>
-        <button onClick={openModal}>Open Modal</button>
-        <Modal
-          isOpen={modalIsOpen}
-          onAfterOpen={afterOpenModal}
-          onRequestClose={closeModal}
-          style={customStyles}
-          contentLabel="Example Modal"
-        >
-
-          <h2 ref={_subtitle => (subtitle = _subtitle)}>Hello</h2>
-          <button onClick={closeModal}>close</button>
-          <div>I am a modal</div>
-          <form>
-            <input />
-            <button>tab navigation</button>
-            <button>stays</button>
-            <button>inside</button>
-            <button>the modal</button>
-          </form>
-        </Modal>
-      </div>
-    );
+  return (
+    <div>
+      <button onClick={openModal}>Open Modal</button>
+      <Modal
+        isOpen={modalIsOpen}
+        onAfterOpen={afterOpenModal}
+        onRequestClose={closeModal}
+        style={customStyles}
+        contentLabel="Example Modal"
+      >
+        <h2 ref={(_subtitle) => (subtitle = _subtitle)}>Hello</h2>
+        <button onClick={closeModal}>close</button>
+        <div>I am a modal</div>
+        <form>
+          <input />
+          <button>tab navigation</button>
+          <button>stays</button>
+          <button>inside</button>
+          <button>the modal</button>
+        </form>
+      </Modal>
+    </div>
+  );
 }
 
 ReactDOM.render(<App />, appElement);