Modern Web Design with HTML5, CSS3, and JavaScript - What are Cascading Style Sheets (CSS) Pseudo-classes?

The video tutorial explains the use of pseudo classes in CSS to define the state of elements, such as hover, visited, active, and focus. It demonstrates how to apply these pseudo classes to hyperlinks, H1 tags, and input fields to change their appearance based on user interaction. The tutorial also covers the use of the first-child pseudo class to style specific elements within a parent.

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