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CSS Group Selector — exercises and bug fixes

5 hands-on exercises and 5 find-the-bug challenges for the CSS Group Selector lesson. Every one is checked automatically in the browser — write the code, run it, and the tests tell you what still fails.

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Exercises(5)

  1. 1

    Group two elements

    easy10 min

    Make both p and span red with one rule.

  2. 2

    Group a class and an id

    easy10 min

    Give .text and #one the same green colour.

  3. 3

    Group three selectors

    easy10 min

    Zero the margin on div, p and span.

  4. 4

    Group with a shared border

    easy10 min

    Give .card and .text a 2px solid border.

  5. 5

    Group then override

    medium10 min

    Group both blue, then make the span red.

Find the bug(5)

  1. 1

    Fix the missing comma

    easy8 min

    Without a comma this becomes a descendant selector.

  2. 2

    Fix the trailing comma

    easy8 min

    A dangling comma makes the whole selector list invalid.

  3. 3

    Fix the invalid member

    easy8 min

    One bad selector in older engines can void the group — use valid ones.

  4. 4

    Fix the duplicated rules

    easy8 min

    Three separate rules should be one group.

  5. 5

    Fix the group that lost a member

    easy8 min

    The span was dropped from the group.

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