Modern HTML and CSS from the Beginning (Including Sass) - before & after Pseudo Selectors

The video tutorial explains the use of CSS before and after pseudo selectors to insert content around elements. It provides practical examples, such as adding a required field indicator in forms and creating an image overlay. The tutorial demonstrates how to style these elements using CSS properties like color, padding, and opacity, and how to position elements using flexbox and absolute positioning. The video concludes with a preview of the next topic, box shadows.

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