Styling radio button is not as easy as other form elements, but still you can do it
with the help of css, by setting height and width, but the design differs from browsers
The size look and feel can be changed, refer this link for reference,
http://www.456bereastreet.com/lab/styling-form-controls-revisited/radio-button/
You can either prefer javascript or UI images for clear changes.
thanks ..
