Drop Down Menu On Variation Not Working


I'm a newbie at Cs-Cart so probably the answer is very simple is very simple.

I'm not able to show the drop down menu in the variation list, only an ugly pop up.

It depends on blocks, layouts or settings?

Regards, Sergio.

Screenshot 2020-11-04 at 16.55.44.png

What do you mean by "drop down menu in the variation list"? Do you have a sample on the demo?

Ok, it was the theme, the basic one, now I have a different one and it's working.