You can set Background, Bborder, Bborder-radius

You can change the background color of selected objects.

This is the screen displayed when the border is connected/disconnected. After canceling, you can individually set up, down, left, and right.

There are a total of 8 border styles available: solid line, dotted line, dashed line, double solid line, inward curve, outward curve, inset, and outset.

You can round the corners of each corner.