In CSS, we write code to target and select specific HTML elements on our page. We can then use a huge number of available CSS properties to style those elements.

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 ...

In CSS, IDs (denoted by the hash) are always unique elements on the page, so whether or not the browser reads left-to-right or right-to-left, the selectors #menu ul li a are redundant anyway.

Dive into the world of CSS pseudo-elements! Learn how to use ::before and ::after to add stylistic content without altering ...

This is often done for proposed attributes that are expected to be included in future CSS releases. How CSS selectors work. CSS selectors can be HTML tags, class attributes assigned to HTML tags and ...

The :has pseudo-class. The :has pseudo-class is an interesting addition to the selector aspect of CSS. As of this writing, all the major browsers except Firefox support it, with Firefox allowing ...

help to illustrate each of the CSS selectors and specificity in action. ... html > body – Two elements represented as a specificity value of 0,0,0,2.

Tony Patton focuses on CSS fundamentals and explains how multiple rules for the same element are handled. Multiple rules ensure that there will be no surprises for either you or the user community.