Internet Explorer hacks

color:red;
color:blue\9;  /* all ie*/
color:green\0;  /* ie8*/
*color:yellow; /* ie7 and ie6*/
+color:orange; /* ie7*/
_color:black; /* ie6*/
.class {
  width:200px; /* All browsers */
  *width:250px; /* IE */
  _width:300px; /* IE6 */
  .width:200px; /* IE7 */
}

color:red; color:blue\9; /* all ie*/ color:green\0; /* ie8*/ *color:yellow; /* ie7 and ie6*/ +color:orange; /* ie7*/ _color:black; /* ie6*/ .class { width:200px; /* All browsers */ *width:250px; /* IE */ _width:300px; /* IE6 */ .width:200px; /* IE7 */ }