Hi there!

Thanks for your query.

I have checked your video and site. Did you mean and indicating your images are looking streched in width there?

If yes, then you can use the following code in your custom CSS to get the actual/good looking image width:

sppb-carousel-extended-item {
   width: auto !important;
     height: auto !important;
}

Hope this helps!

Note: Path towards custom CSS(Joomla 3): Extensions>Templates>Styles> Click on your current default template name then choose Template Options. Then find custom CSS within the custom code.

Best Regards