Is there a CSS validator that is not as strict as W3C's that will validate things like normalize.css?

Question

I am using H5BP and I'm looking for a way to debug my CSS, however, W3C's CSS Validator returns errors for H5BP's normalize.css as well as main.css.

Is there something I can use to check for syntax errors that will validate normalize.css and main.css?

Also, what is the reason for not using the following line of code on normalize.css and main.css:

@charset "UTF-8";  

Thanks for the help!

UPDATE:

In the end, my question comes down to biting the bullet and either separating my CSS code from the boilerplate's or deleting things I may not need. This question helped me get there:

HTML5 Boilerplate, HTML5 Reset CSS validation

Answer 1

UPDATE:

In the end, my question comes down to biting the bullet and either separating my CSS code from the boilerplate's or deleting things I may not need. This question helped me get there:

HTML5 Boilerplate, HTML5 Reset CSS validation