Web 页面平滑圆角 CSS

Question

Here is a link that provides free CSS samples. Black Coffe However when i download and open it in visual studio the design time html is all blocks but when it is compiled it then renders with nice rounded corners and nice format. I cannot see where they are doing this in html or css. Can anyone help. I am new to this.

Answer 1

It's a background image. The link the image is here , and you can see the rounded corners. The Visual Studio designer is probably just not showing it correctly.