TransBorder Stack creates a semi-transparent frame and a border around your Stack. Additionally you can even have a shadow around it. Each of theses options can be configured by width and color.
Grey Frame with 0.5 opacity and 1px white border and 5px border radius
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Example 2:
Red Frame with 0.5 opacity, 5px grey border and 5px white shadow and 15px border radius
Settings
Just drop the stack and configure it. You can use these settings:
Opacity: 0 is fully transparent, 1 is non-transparent
Inner / Frame / Border / Shadow Color: Specific colors can be set
Frame / Border Width: Different widths can be set for border and frame
Shadow: Enable the shadow around the Stack
Shadow width: How much pixels of shadow do you want? Be sure to set this Stack's padding for at least as many pixels as entered here
Corner radius: Set the corner radius in pixels (15 is a good choice)