Hello World

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<!DOCTYPE>
<html>
<head>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
</head>
<body>
​
    <main>
        <div class="container">
            <div id="hello_world"></div>
        </div>
    </main>
​
    <hr/>
​
    <header>
        <div class="container">
            <h1>Hello World</h1>
        </div>
    </header>
​
    <hr/>
​
    <footer class="footer">
        <div class="container"></div>
    </footer>
​
    <script src="https://d3js.org/d3.v3.min.js"></script>
​
    <script src="script.js"></script>
​
</body>
</html>
​
    

https://d3js.org/d3.v3.min.js