feat: modify style and change questions

src/components/Quiz/QuizBegin.tsx

src/components/Quiz/QuizCustomQuestionContent.tsx

src/components/Quiz/QuizExplanationModal.tsx

src/components/Quiz/QuizFinish.tsx

src/components/Quiz/QuizQuestion.scss

src/components/Quiz/QuizQuestion.tsx

src/components/Quiz/QuizQuestionContent.tsx

src/components/Quiz/quizBegin.scss

src/components/Quiz/quizExplanationModal.scss

src/components/Quiz/quizFinish.scss

src/components/Quiz/quizQuestion.scss

src/db/quizEntity.json

src/locales/fr.json

src/services/quiz.service.ts