The conflicting CSS is the ‘box’ class. The Kallyas theme also uses this class. Your CSS forces it to have width=200 and height=200 and border=”1px solid #greenish”. I also used the contact page to notify you of this.
Tried to fix it because it started to annoy me. For me, this worked:
– use the plugin editor to edit wp-visual-slidebox-builder/custom-fun-box.css
– find the .box element and comment out all lines except the overflow:hidden line
Hate to tell everyone but I have been getting emails from tons of people who purchase this “product” and get absolutely NO support whatsoever. Consider it a cheap loss of money. I did. I have no idea how to tell people NOT to spend their money on this piece of junk, but there you go.