How to define specific CSS rules for IE9 alone?

Friends, please help me in defining specific css rule for IE9? For example like this

/* IE 6 fix */
* html .twit-post .delete_note a { background-position-y: 2px; }
* html .twit-post .delete_note a:hover { background-position-y: -14px; }

Note the accepted answer also targets IE10. As such, for a more complete list:

IE 6

* html .ie6 {property:value;}

.ie6 { _property:value;}

IE 7

*+html .ie7 {property:value;}

*:first-child+html .ie7 {property:value;}

IE 6 and 7

@media screen\9 {
    .ie67 {property:value;}
}

.ie67 { *property:value;}

.ie67 { #property:value;}

IE 6, 7 and 8

@media \0screen\,screen\9 {
    .ie678 {property:value;}
}

IE 8

html>/**/body .ie8 {property:value;}

@media \0screen {
    .ie8 {property:value;}
}

IE 8 Standards Mode Only

.ie8 { property /*\**/: value\9 }

IE 8,9 and 10

@media screen\0 {
    .ie8910 {property:value;}
}

IE 9 only

@media screen and (min-width:0) and (min-resolution: .001dpcm) { 
 // IE9 CSS
 .ie9{property:value;}
}

IE 9 and above

@media screen and (min-width:0) and (min-resolution: +72dpi) {
  // IE9+ CSS
  .ie9up{property:value;}
}

IE 9 and 10

@media screen and (min-width:0) {
    .ie910{property:value;}
}

IE 10 only

_:-ms-lang(x), .ie10 { property:value\9; }

IE 10 and above

_:-ms-lang(x), .ie10up { property:value; }

@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
   .ie10up{property:value;}
}

IE 11 (and above..)

_:-ms-fullscreen, :root .ie11up { property:value; }

Javascript alternatives

Modernizr

Modernizr runs quickly on page load to detect features; it then creates a JavaScript object with the results, and adds classes to the html element

User agent selection

The Javascript:

var b = document.documentElement;
        b.setAttribute('data-useragent',  navigator.userAgent);
        b.setAttribute('data-platform', navigator.platform );
        b.className += ((!!('ontouchstart' in window) || !!('onmsgesturechange' in window))?' touch':'');

Adds (e.g) the below to the html element:

data-useragent='Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)'
data-platform='Win32'

Allowing very targetted CSS selectors, e.g.:

html[data-useragent*='Chrome/13.0'] .nav{
    background:url(img/radial_grad.png) center bottom no-repeat;
}

Footnote

If possible, avoid browser targeting. Identify and fix any issue(s) you identify. Support progressive enhancement and graceful degradation. With that in mind, this is an 'ideal world' scenario not always obtainable in a production environment, as such- the above should help provide some good options.

Attribution / Essential Reading

simon

You can prepend the CSS style with

:root

to make it IE9-specific, like this:

:root #element { color:pink \0/IE9; }  /* IE9 */

Use IE conditional comments:

<!--[if ie 9]>
    your stuff here
<![endif]-->

\9 is a "CSS hack" specific to Internet Explorer.

This simply means that the one specific line of CSS ending with a \9;

In your example, If your CSS looked like this...

html .twit-post .delete_note a 
{ 
background-position-y: 2px\9; 

}
html .twit-post .delete_note a:hover 
{ 
 background-position-y: -14px\9;
 }

The result would be background-position-y: -14px; in IE 9

I think you can do the same as if you want to write specific code for IE6 but say IE9 instead :)

<!--[if IE 9]>
Special instructions for IE 9 here
<![endif]-->

use conditional CSS: (place the code above the <head> on your html, and IE9 will read that extra CSS file)

<!--[if (gte IE 9)|!(IE)]><!-->
place the link to the CSS file here
<![endif]-->

This means the approach is with a new CSS file rather than a hack in the classes, this guarantees the CSS are valid.

I found that in some cases using negative values (when using a compiler to compile LESS files) using:

margin-right: -15px\9; /* This fails */
margin-right: ~"-18px\9"; /* This passes */

You shouldn't need to target IE9. It is capable of handling modern css and shouldn't be hacked. This is an outdated method of developing.

来源：https://stackoverflow.com/questions/7364891/how-to-define-specific-css-rules-for-ie9-alone

标签

css

internet-explorer-9

css-hack