This text will be green if the rule has been applied.
#testElement {
color: /**/#00cc00;
}
Because IE 6.x will behave like IE 5.5 if it is in quirks mode, any hack used to account for the differences in behaviour between IE 6 in standards mode and Win IE 5.x will not work as planned. Be sure that your HTML document will be interpretted in standards mode in IE 6 if you are going to use this hack (or others like the High Pass Filter, Simplified Box Model, or Inline High Pass Filter).
If used on certain properties, odd behaviour will result. Both the declaration that uses the hack and preceding declarations using the same property will be ignored. However, if the hacked declaration has an associated short-hand or long-hand property, preceeding values applied to those properties will not be ignored which provides a way around this issue. The background and border properties are thus affected while width, height, and padding are not. See Edwardson Tan's CSS Comment Bugs page for more detail and examples.
This hack is used in some of the Alternate Box Model Hacks.