css hack for ie7

i geeks mi capiranno, english for everyone:

IE 6 and below
Use “* html {}” to select the html element.

IE 7 and below
Use “*:first-child+html {}” or “* html {}” to select the html element.

IE 7 only
Use “*:first-child+html {}” to select the html element.

IE 7 and modern browsers only
Use “html>body {}” to select the body element.

Modern browsers only (not IE 7)
Use “html>/**/body {}” to select the body element.