Create inset window boxshadow border with space between actual window and border

I want to create the white border seen in the image below with CSS. White border that is set 25px inside the window. Iv'e tried to use box-shadow inset however was not able to create the space between the edge of the window.

I used this css:

border: 3px solid white; //took this out but still no luck    
box-shadow: inset 0 0 0 5px #FFFFFF;

I also tried without the normal border as well.

I think I can create an overlay div that has a padding or margin and give it a border, but the problem is the content needs to be scrollable and clickable below it.

The goal: The white box just above the icons.