<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Text edit</title>
    <style>
body {
    margin: 8px;
    height: 100%;
}
textarea {
    width: 100%;
    height: 135px;
    box-sizing : border-box;
    white-space: pre;
}
button {
    float: right;
    margin-left: 8px;
    margin-top: 8px;
    height: 30px;
}
    </style>
</head>
<body>
    <textarea id="js-textarea" autofocus><!--text--></textarea>
    <br>
    <!--cancel-button-->
    <!--ok-button-->
</body>
</html>