Overlapping issue

[BarryDrez]

Hi, When I add a context menu to a div within a gridster item, it opens and appears underneath the gridster-item below it.

In the below example, When the menu of gridster item 1 opens, the list of items appears underneath gridster item 2.

___________________
|                 |
| gridster item 1 |
|                 |
|            menu |
-------------------
___________________
|                 |
| gridster item 2 |
|                 |
|            menu |
-------------------

I have tried variations of position and z-index in my stylings, but nothing seems to work. Any help here would be greatly appreciated.