Remove table from iframe

Hello, I am hoping that you can help me, my client has been using spreadsheet converter for at least 8 years and initially, I built them a website where they uploaded the files associated with each calculator ie. HTML, CSS and js and manipulated these files so that I can get the correct parts to show as required and used PHP get_file_contents to pull the information onto the page, it is time for a rebuild and came across your plugin, which appears to be a lot easier for the end-user to use as they just upload one zip and copy across the code tot he page to display. However, it adds the iframe into a table – which isn’t great as it is set to a size which needs to be amended else to view the calculator without scrolling, so ideally it will be better to remove the table and keep the iframe as width and height 100% to fit inside a container of my choosing. Is this possible? I am guessing that I can manipulate the styles of the iframe with jquery as it will be hosted on the same domain or is there an easier way to amend the styles universally as the excel calculators are not the prettiest.

Thanks in advance for your help.

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