Add Scroll Bar to Gift Registry Widget

I am trying to create a booking form for kayak rentals.  The best way i have found to do this is through the gift registry widget.  Since I need to have the ability for customers to select a certain day and have quantity limits on that day, i need to list out all days.  However, when I do so, it makes the form very long.  How can resize the frame for each month so that only 5 dates appear and then a scroll bar appears to scroll to other dates?

Please inject the following CSS code in your form: https://www.jotform.com/help/42-How-to-Clone-an-Existing-Form-from-a-URL 

#cid_26,#cid_27 div{

    height: 200px;

    overflow: scroll;

}

Result:

Follow this guide to inject the code: http://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

Worked perfectly, thanks.