Understanding the CSS Cascade

4.7 Average Customer Rating

Demystify CSS order, specificity and origin.

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  • 9 Videos
  • 0 hours 48 minutes
  • 3791 Happy Students

About the course

In CSS, the cascade is everything — there’s a hint why in its name. If you don’t understand how CSS rules are applied by browsers, you are in for a world of pain.

Over a series of five lessons, you’ll learn how browsers sort declarations to determine which selectors will “win”. The course includes a series of hands-on exercises on all aspects of the cascade from user style sheets to !important rules, specificity and more.

This course is taught by Russ Weakley, with a technical review by Aurelio De Rosa.

  • 9 Videos
  • 0 hours 48 minutes
  • 3791 Happy Students
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Your instructor

Russ Weakley


Russ is a world-renowned author, speaker and CSS expert. Russ has a detailed knowledge of Design and development. His expertise covers graphic design, interface design, site architecture and standards based development.
Russ Weakley
16 Courses

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    Courses Outline

    Lesson 1: Getting Started
    Free
    Introduction to this Course
    2:10
    Types of Style Sheets, Normal vs/ Important Declarations & Conflict
    5:08
    Lesson 2: Sorting by origin and importance
    Gathering and Sorting Declarations & Exercise
    9:29
    Lesson 3: Specificity
    Determining the Selector Weight
    9:07
    Exercise on Specificity
    9:35
    Lesson 4: Order
    Determining the Order Specified & Exercise
    6:16
    Lesson 5: The Future
    The CSS3 Cascade
    4:47
    Lesson 6: Postscript
    Override Declarations
    2:01
    Course Resources
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    • 9 Videos
    • 0 hours 48 minutes
    • 3791 Happy Students