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Well, I put the link to my website, to be analyzed on Pagespeed and to fix optimization issues and etc..
And for the javascript, was pointed out that it needed to be corrected
Delete rendering lock Javascript and CSS
And that I solved by doing according to this website, doing as follows, when calling the js file
<script async defer src="js/jquery.js"></script>
But the same error is pointed to css files. There is a similar way to load css files asynchronously?