1234567.png

Based on your query, it seems you are working with a and want to create a solid feature, likely within a CAD (Computer-Aided Design) environment like SOLIDWORKS, or perhaps you are referring to a solid, non-transparent background.

If the PNG appears transparent when it should be solid, check the image's "Alpha Channel" (Cmd+i on Mac) or use a mask in your software. To help you better, could you let me know: 1234567.PNG

Are you working in ?