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Computer science · University

CSS layout and cascade

A pattern that chooses which elements a CSS rule targets.

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Prerequisites

Basic computer literacy.

Study notes

Selector

A pattern that chooses which elements a CSS rule targets.

Cascade

The rule system that resolves competing CSS declarations.

Box model

The content, padding, border and margin dimensions of an element.

Responsive design

Adapting layout and presentation to different viewport sizes and capabilities.

Worked examples

Which term best matches this description: A pattern that chooses which elements a CSS rule targets.

Selector is the matching concept in this lesson.

Selector

Which term best matches this description: The rule system that resolves competing CSS declarations.

Cascade is the matching concept in this lesson.

Cascade

Check your understanding

  1. Which concept would you apply first in a situation where the content, padding, border and margin dimensions of an element.

    1. Box model
    2. Cascade
    3. Selector
    4. Responsive design

  2. Name the concept described as: Adapting layout and presentation to different viewport sizes and capabilities.

  3. Which statement about Selector is most accurate?

    1. A pattern that chooses which elements a CSS rule targets.
    2. The content, padding, border and margin dimensions of an element.
    3. Adapting layout and presentation to different viewport sizes and capabilities.
    4. The rule system that resolves competing CSS declarations.

  4. Explain one important difference between Selector and Cascade.

Answers and marking guidance

Answers and marking notes
  1. Box model

    The scenario directly calls for Box model.

  2. Responsive design

    The intended concept is Responsive design.

  3. A pattern that chooses which elements a CSS rule targets.

    The definition in the lesson notes gives the required condition.

  4. Selector: A pattern that chooses which elements a CSS rule targets. Cascade: The rule system that resolves competing CSS declarations.

    Credit a clear distinction using both definitions and an appropriate example if supplied.

Further reading and review references

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