Root Container Clipping Dropdown Menu

I have a Popup window that I want to auto size its height, but when I do this, the drop down menu gets clipped. Does anyone have an idea how I can stop this?

I wanted the form to auto size on the contents because based on which room they choose they will have varying options to check off.

I would like to have the dropdown menu overlap the window.

So I found the solution to my own question.

.ia_popup {
    border-radius : 15px;
    overflow: visible;
}

The answer was to set the overflow to visible in the CSS for the popup window.