How to make make rounded corners of a Node-Webkit application?

Question

Programming

Hello everyone)
In general, I started writing an application for Node-Webkit .
I wanted to make up my interface and then the question arose, how to make rounded corners of the application?
CSS Code:

body {
  width: 800px;
  height: 500px;
  font-family: "Segoe UI", sans-serif;
  background: transparent;
  border-radius: 5px; 
  -webkit-border-radius: 5px; 
  -moz-border-radius: 5px; 
  -khtml-border-radius: 5px;
  overflow-x: hidden;
}

Screen:

Answer 1

habrahabr.ru/post/190590/#comment_6620496