A dotted outline
A dashed outline
A solid outline
A double outline
A groove outline
A ridge outline
An inset outline
An outset outline
注释：åªæœ‰åœ¨è§„定了 !DOCTYPE 时，Internet Explorer 8 （以åŠæ›´é«˜ç‰ˆæœ¬ï¼‰ æ‰æ”¯æŒ outline-style 属性。