Customizing Exported HTML5 file

When viewing our exported html file on a browser, the experience defaults to a lower resolution window. I would like it to:

  1. Launch in full screen by default
  2. Remove the blue buttons/white region

For context, I am not a programmer, but I assume I would be customizing the portion of the HTML file.

The link will be embedded in Webflow, so I am unsure if there are additional settings/adjustments I would be integrating into the file.

Any insight would be greatly appreciated.

Best regards,
Jonathan