JSFiddle - React, Tailwind, and code Playground

HTML

<!doctype html>
<html lang="ru">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Урок 1</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
</head>
<body>
    <div class="container">
        <hr>
        <div class="sample">
            <input type="text" v-model="name">
            <hr>
            <h2>Hello, {{ name }}</h2>
        </div>
        <hr>
        <div class="sample2">
            <input type="text" v-bind:value="name" v-on:input="name = $event.target.value">
            <hr>
            <h2>Hello, {{ name }}</h2>
        </div>
        <hr>
        <div>
            <a href="http://js.dmitrylavrik.ru/vue/" target="_blank">Курс по Vue.js</a>
        </div>
    </div>
</body>
</html>

JavaScript

let sample = new Vue({
  el: '.sample',
  data: {
    name: ''
  }
});

let sample2 = new Vue({
  el: '.sample2',
  data: {
    name: 'Some'
  }
});