Single Page Math Quiz Website

Job ID: 35202172

Budget: ₹600 – ₹649 INR

I need website (HTML, CSS, JavaScript) which can generate simple math quiz (+, -, x, /) with timer of 15 Sec as shown in below attachment. And I also need firebase Realtime database connection which update points in database as shown in another attachment.
Related categories: JavaScript Website Design CSS HTML Google Firebase