iframe-1-helper.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html>

    <head>

        <style>

            html, body {

                margin: 0;

                padding: 0;

        </style>

    </head>

    <body>

        <div style="overflow: auto; width: 150px; height: 200px">

            <div style="position: sticky; top: 0; width: 100px; height: 100px; background-color: green"></div>

            <div style="height: 300px; width: 100px"></div>

        </div>

    </body>

</html>