AFAIK, CSS cannot affect the DOM tree. So, display: none just says the element should not be displayed, not that it should cease to exist. Style/structure separation and all that.

HTML and CSS form the basic coding languages for web design and development. ... There are six sessions in the course, each with video lectures, detailed notes, and sample code.

Editor’s note: This How To assumes a basic understanding of HTML. Along with HTML and JavaScript, CSS forms the foundation of the open Web. These three technologies power just about every ...

By appending just a few lines of HTML and CSS code, researcher Louis Dion-Marcil showed how an external sender could hide the very warning from an email message. Hiding "external sender" warning ...