Is CSS case sensitive?

[ashiselma]

Is CSS case sensitive?

[singhabhishek25]

The class and id names are case sensitive else codes are not case sensitive. For the example class="First" and class="first" are two different class but font-size and FONT-SIZE acts as same.

[rehal]

CSS IDs and classes are definitely case sensitive. WinIE 5.x does this wrong (ignores case), but WinIE 6 fixed it. All the standard-compliant browsers (FF, Moz, Safari, Opera) are case sensitive.

[webcreations]

CSS is not case sensitive in most respects except when comes to class and id attributes.

[maxi007]

yes its case sensetive