The problem is very likely a UTF-8 byte-order-mark at the start of the file added by your text editor – this won’t appear in a text editor – but will cause the @charset error.
https://www.w3.org/International/questions/qa-byte-order-mark
If a UTF-8 byte-order-mark is present the first 3 bytes of the file will be EF BB BF in a hex dump of the file. On Windows you can use PowerShell to view a hex dump of the CSS file: https://superuser.com/a/1247756
The way @charset is handled is specified here:
https://www.w3.org/TR/css-syntax-3/#input-byte-stream
Best Regards
Mark
--
Mark Rogers - mark.rogers@powermapper.com<mailto:mark.rogers@powermapper.com>
PowerMapper Software Ltd - www.powermapper.com
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From: Isabella Draine-Soto <idraine22@gmail.com>
Date: Friday, 24 September 2021 at 08:11
To: "www-validator-css@w3.org" <www-validator-css@w3.org>
Subject: URGENT- Validator Error
Resent from: <www-validator-css@w3.org>
Resent date: Friday, 24 September 2021 at 08:11
Good Morning,
I was using your website to validate my file and this error keeps popping up. And no matter what changes I make it doesn’t seem to fix? Can you please help me? Thank you. Here is the error below and my file. I did take out the space between charset and the “ mark but that didn’t solve anything, and there are no spaces before @. If you could help I would greatly appreciate it.
[cid:image001.png@01D7B11D.D5E101E0][cid:image002.png@01D7B11D.D5E101E0]
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