How to remove vertical scroll bar at lightbox window?

Hi! I've got a problem. If I click on image called "Исправление геометрии" lightbox window appears. That's fine. But! The lightbox has vertical scroll bar. How can I disable it?

Please include the next code along with your form lightbox code to remove scrollbars from the lightbox window.

<style type="text/css">
div.jt-content{
overflow-x: hidden !important;
overflow-y: hidden !important;
</style>

If you need any further assistance, please let us know.