Wrongfully "Expected RPAREN at line..." Error in my main.css file

[Ben35548884034n]

Hallo,

bedauerlicherweise bekomme ich in meinem Dreamweaver CSS File häufig den Error "Expected RPAREN at line..."

Das CSS ist korrekt und validiert, es gibt also keinen Fehler.

Hier ein Ausschnitt:
::placeholder{
color:inherit
}
:where([hidden]){
display:none
}
:where([contenteditable]:not([contenteditable=false])){
-webkit-user-select:auto;
-moz-user-select:auto;
user-select:auto;
word-wrap:break-word;
-moz-user-modify:read-write;
-webkit-user-modify:read-write
}

Error: 
Expected RPAREN at line 4, col 8.
Expected RPAREN at line 7, col 8.

Würde mich über Hilfe Freuen.
VG Ben

[Ben M · Accepted solution]

Unfortunately DW is very out of date and is in minimal maintenance mode. If your code is validating online, but not in DW you should ignore DW and consider your code to be valid.

[Nancy OShea · Accepted solution]

Use the online Validation Service below.  It's more reliable for checking modern CSS code.

https://jigsaw.w3.org/css-validator/validator

[BenPleysier · Accepted solution]

Try removing the deprecated properties in:

:where([contenteditable]:not([contenteditable=false])){
-webkit-user-select:auto;
-moz-user-select:auto;
user-select:auto;
word-wrap:break-word;
-moz-user-modify:read-write;
-webkit-user-modify:read-write
}