Thanks!
After a bit of messing around I also found that adding this
style=”max-width: none;”
so you get this `widget_args[“thumbnail_width”] . ‘” height=”‘ . $this->widget_args[“thumbnail_height”] . ‘” alt=”‘ . $post_title . ‘” style=”max-width: none;” />’;
`
to the class-main.php works.
I’m not a techie by any means. Would you recommend your solution over this other?