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Completion percentage: 78%
Completion percentage: 78%
Completion percentage: 44%
Completion percentage: 44%
Completion percentage: 58%
Completion percentage: 58%
Completion percentage: 82%
Completion percentage: 82%
Completion percentage: 18%
Completion percentage: 18%
Completion percentage: 67%
Completion percentage: 67%
Completion percentage: 82%
Completion percentage: 82%
Completion percentage: 16%
Completion percentage: 16%
Completion percentage: 42%
Completion percentage: 42%
Completion percentage: 38%
Completion percentage: 38%
Completion percentage: 86%
Completion percentage: 86%
Completion percentage: 81%
Completion percentage: 81%
Completion percentage: 35%
Completion percentage: 35%
Completion percentage: 64%
Completion percentage: 64%
Completion percentage: 37%
Completion percentage: 37%
Completion percentage: 75%
Completion percentage: 75%
Completion percentage: 72%
Completion percentage: 72%
Completion percentage: 71%
Completion percentage: 71%
Completion percentage: 72%
Completion percentage: 72%
Completion percentage: 77%
Completion percentage: 77%
Completion percentage: 79%
Completion percentage: 79%
Enheter & Selektorer
Testa din kunskap av CSS-enheter och selektorer.
UnitsCompletion percentage: 82.8% (9513)Completion percentage: 82.8% (9513)
Completion percentage: 82.8% (9513)
Completion percentage: 82.8% (9513)
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Which of these CSS units have you used?
Pseudo ElementsCompletion percentage: 81.9% (9408)Completion percentage: 81.9% (9408)
Completion percentage: 81.9% (9408)
Completion percentage: 81.9% (9408)
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Which of these CSS pseudo-elements have you used?
CombinatorsCompletion percentage: 81.8% (9398)Completion percentage: 81.8% (9398)
Completion percentage: 81.8% (9398)
Completion percentage: 81.8% (9398)
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Which of these combinations CSS selectors have you used?
Tree / Document StructureCompletion percentage: 81.8% (9396)Completion percentage: 81.8% (9396)
Completion percentage: 81.8% (9396)
Completion percentage: 81.8% (9396)
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Which of these structure related CSS selectors have you used?
We asked members of the CSS community to share their “pick of the year”
My 2020 Pick: Content-Visibility
content-visibility
is making a huge difference in the performance of my web apps already, but at the same time I think it should be the job of browsers to optimize this, not devs.
We asked members of the CSS community to share their “pick of the year”
Kilian Valkhof
Web developer and creator of Polypane
AttributesCompletion percentage: 74.9% (8608)Completion percentage: 74.9% (8608)
Completion percentage: 74.9% (8608)
Completion percentage: 74.9% (8608)
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Which of these CSS attributes selectors have you used?
Links/URLsCompletion percentage: 65.8% (7557)Completion percentage: 65.8% (7557)
Completion percentage: 65.8% (7557)
Completion percentage: 65.8% (7557)
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Which of these links & URLs related CSS selectors have you used?
InteractionCompletion percentage: 82.6% (9489)Completion percentage: 82.6% (9489)
Completion percentage: 82.6% (9489)
Completion percentage: 82.6% (9489)
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Which of these interaction CSS selectors have you used?
Form ControlsCompletion percentage: 74.5% (8559)Completion percentage: 74.5% (8559)
Completion percentage: 74.5% (8559)
Completion percentage: 74.5% (8559)
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Which of these form related CSS selectors have you used?