editor.html

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <link rel="stylesheet" href="practicepage.css">
    <script src="https://kit.fontawesome.com/a4c432fcd6.js" crossorigin="anonymous"></script>
    <title>Editor</title>
    <style type="text/css" media="screen">
    #editor { 
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
    }
    .jumbotron{
        position: absolute;
        bottom: 0%;
        right: 0%;
    }
    </style>
   </head>
<body>

<div class="editorContainer" id="editor">function foo(items) {
    var x = "All this is syntax highlighted";
    return x;
}
</div>
<script src="ace.js" type="text/javascript" charset="utf-8"></script>
<script>
    var editor = ace.edit("editor");
    editor.setTheme("ace/theme/monokai");
    editor.session.setMode("ace/mode/javascript");
</script>
<p>
    <label>Text Area</label>
    <textarea> id = "myTextArea"
            rows = "3"
            cols = "80">Your text here</textarea>
  </p>
  <div class="jumbotron">
    <a class="btn btn-danger btn-lg" href="#" role="button">Submit</a>
    <a class="btn btn-danger btn-lg" href="#" role="button">Help</a>
  </div>
</body>
</html>