IvanRubert/cuestionario-examenes ? reverse-engineered prompt

Build me a simple web app for creating and taking questionnaires and exams.

I want a clean page where a user can answer a set of questions, move through them one by one or see them all on the page, and submit at the end to get a score or result. It should look neat and work well on desktop and mobile, with the styling kept in a separate CSS file and the behavior in JavaScript.

Please make it easy to reuse with different question sets, so I can swap the questions and answers without rewriting everything. If it makes sense, add things like showing the current question number, a progress indicator, and basic feedback after submitting. Keep the interface simple and friendly, like a school quiz or practice exam.

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