ROUNDED CORNERS - PURE CSS

Here's the css code:

 border:solid #343530 1px;
 background:#0A0D06 none repeat scroll 0 0;

-webkit-border-radius:5px;
-khtml-border-radius:5px;   
-moz-border-radius:5px;
border- radius:5px;

CSS - Rounded Corners actual result:

Hello World!

ps: tested on firefox.