Xml – Flex buttons and styles

I am creating a SWF file using a MXML file. The MXML file define several MX:Button and uses an external stylesheet to style them.

There is a problem I am facing at the moment, I am aiming to style the buttons in a way that is similar to the way I can style HTML button elements. However, I could not achieve such look and feel. For example, I could not find a way to define the color and thickness of the borders for each side of the button (top, bottom, left, right), the background color, the margins, the padding, the width, and the height of the button. Also, selector such as hover, active, focus are not available. I was only able to change the size and the font color of the button successfully.

I know that I might be missing something, so I decided to ask for help. Can anyone provide an example of a style sheet that can override the mentioned attributes.

Thank you.