html/wrapper.html

<iframe style="width: 100%; height: 600px"
    name="result"
    allow="midi; geolocation; microphone; camera; display-capture; encrypted-media;"
    sandbox="allow-modals allow-forms allow-scripts allow-same-origin allow-popups allow-top-navigation-by-user-activation allow-downloads"
    allowfullscreen="" 
    allowpaymentrequest="" 
    frameborder="0"
    srcdoc='%%%HTML%%%'
    >
</iframe>