episode 1 of coders guides Bootstrap series

<!DOCTYPE html>

<html>
    <head>
        <title>Bootstrap 3</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
        <link href="css/bootstrap.min.css" rel = "stylesheet"/>
        <link href="css/Styles.css" rel = "stylesheet"/>
    </head>
    <body>

        <h1>Hello World</h1>

        <script src ="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
        <script src ="http://code.jquery.com/jquery-1.11.0.min.js"></script>
    </body>
</html>


Hi all, not sure why the CSS is not being picked up i have tried alternative filepaths however it still doesnt get picked up and displays the header in standard HTML please help