SU Tabs

Hello,
First of I would like to say this is a fantastic plugin with almost endless combinations and styles and uses.

I am however struggling slightly with SU_Tabs
I have inserted a pdf into 5 tabs. I have had to set the size to be 1000 by 1000 but I would like to set it as 100% by 100% so that it does show empty space when viewed on mobile. I have tried to enter this but it does like it.

Is this possible? Or maybe something that could be considered for an update?

http://ebl.precisioncomputing.co.uk/wp/gents/1st-xvi/

ps is this document addin using google viewer or is that coming from another plugin that I have? The reason that I ask is because this pdf that I have displayed will be updated each week with results and I am not wanting the URL for my pdf to change which will happen if I use wordpress uploader. I am trying to not use an ftp transfer which is the only way that I can think of keeping the file name the same!

https://ww.wp.xz.cn/plugins/shortcodes-ultimate/