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Powerful CSS Psuedo-Classes

September 29, 2022
October 12, 2022
Episode Number:

CSS pseudo-classes expand its capabilities into a tool that can style web pages using advanced sets of parameters, without the need for JavaScript. In this episode, we'll be looking into the :has(), :is(), and :not() pseudo-classes. We'll explore interesting use cases, using them together, how they work, and whether they're ready to be used in a production project.


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Show Notes

Topics & Timestamps

  • Introduction | 00:00:00
    - Updating my CSS skills
    - Exploring YouTube videos found some powerful pseudo-classes that I've never used before
  • :has() | 00:02:59
    - "The :has() CSS pseudo-class represents an element if any of the selectors passed as parameters (relative to the :scope of the given element) match at least one element." - MDN
    - Use cases for :has()
    - Using combinators with :has()
    - Browser support for :has() (Source)
    - Sources: MDN, Kevil Powell Video
  • :is() | 00:17:20
    - "The :is() CSS pseudo-class function takes a selector list as its argument, and selects any element that can be selected by one of the selectors in that list. This is useful for writing large selectors in a more compact form." - MDN
    - Shrinking large and complex selectors
    - Helps with typos/errors in complex selectors
    - Browser support for :is() (Source)
    - Sources: MDN, Kevin Powell Video, Steve Griffith Video
  • :not() | 00:33:31
    - “The :not() CSS pseudo-class represents elements that do not match a list of selectors. Since it prevents specific items from being selected, it is known as the negation pseudo-class.” - MDN
    - Unexpected behaviours
    - Using :not() with :has()
    - Browser support for :not() (Source)
    - Sources: MDN, Steve Griffith Video
  • The Importance of Pseudo-Classes Like This | 00:43:26
    - Makes CSS more powerful
    - Gives those learning HTML, CSS, and JS more options to build websites with just HTML & CSS skills while they learn JS