Hi niche,
Sorry for the late reply.
So, must I - in the w3.css - place in the top "#myCode {" and at the end "}", and apply it to a div with ID name equal to "myCode"? Or apply it to each one (#myCode w3-content... #myCode w3-image... for example)?
My problem are the "global" selectors, like html, body, input[type=button], etc. on w3.css.
What is your opinion?
Thanks.
Kepler