CSS hacks that you can use for Internet Explorer

To target Internet Explorer (IE) versions 6 and below, you can use the * html hack:

* html {

  /* Your IE-specific styles go here */

}

To target only IE7, you can use the *+html hack:

*+html {

  /* Your IE7-specific styles go here */

}

To target only IE8, you can use the \9 hack:

.some-class {

  color: blue;

  /* All other browsers */

  color: red \9;

  /* IE8 and below */

}

To target only IE9, you can use the @media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) hack:

@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {

  /* Your IE9-specific styles go here */

}

Note: These CSS hacks are specific to Internet Explorer and are not supported by other browsers. It's generally better to use feature detection and use modern, standards-compliant techniques instead of relying on hacks like these.