Responsive countdown landing page vanilla JS

Hi all! Here my approach to this challenge

• Using Vanilla JS and plain CSS
• Semantic HTML
• Starting at 14 days, will count down to 0 then restart
• Pending implementation of the flipping effect, need to find a way to get it done first..

I used a black overlay in the top half of the number cards to give the "darker color effect" to both card and number, with an alpha of 0.2, and before/after pseudoelements to implement the small holes to the sides of the cards.

Feedback is more than welcome!