
CSS HTML Validator is extremely configurable. Many validator messages can be individually disabled or the message type can be changed to suit your specific requirements.
For more information about disabling validator messages, please visit this documentation page:
https://www.htmlvalidator.com/current/d ... ssages.htm
If you don't want to disable a message but you want to change its type (like from error to warning or warning to error) then you can (in many cases) do that as well:
https://www.htmlvalidator.com/current/d ... _types.htm
Getting too many messages? Want to concentrate on only the most important messages? Try doing an 'Errors only' validation (Alt+2) that shows only error messages:
https://www.htmlvalidator.com/current/d ... _modes.htm
And if you want to get more advanced with more control, you can do that also (in the pro or higher edition) using TNPL scripts. See the "Disable Messages by Using TNPL (Advanced)" section at the bottom of this page:
https://www.htmlvalidator.com/current/d ... ssages.htm