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First make decisions across all 16 lessons, then prove you can apply the core layout and accessibility techniques in code.
Answer 16 questions across the course. Score at least 80% to pass this knowledge check, then apply your skills in the capstone. Account scores are recomputed on the server. This is a learning check, not certification.
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The checks inspect the CSS you wrote. Passing them confirms the requested rules are present; inspect the preview yourself for visual quality and accessibility.
0/3 challenges passedComplete the stylesheet so the cards form responsive columns without overflowing a narrow viewport.
Grid · minmax() · box sizing · intrinsic sizing
Practice here: edit your HTML or CSS and compare the result. Live preview updates after a short pause. Scripts, form submissions, and external resources are blocked. Wide previews scroll inside this panel. Running code does not grade or save it; use the separate learning and save controls.
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