Is it possible to get transparent background color in html slideshow tutorial?

Q: Dear support,

I have downloaded your free version of wowslider with the view to purchasing your unlimited websites option once I have given it a try.

I am struggling with one thing. I have uploaded it to my website and it has worked very well, however it has changed the background color of the webpage. I have tried looking through the css folders to see if I can find anything but haven't managed to yet.

Could you please advise me on how to make the wowslider background color transparent or simply delete it as I would like to keep the original background color.

A: You can use .png images with transparent background.

Actually, wowslider app. generates .jpg images only.
But you can change them on .png images manually.
1) Upload your .png images to data/images folder
2) Change image format in generated .html code. For example:

...
<span><img src="data1/images/image1.jpg" alt="" title="" id="wows1"/></span>
...