Responsive ecommerce-product-page

I'm happy that I've completed this project. I have added some animations and also made additions to the cart, such as subtotal calculations that increases and decreases every time you add or remove an item from the cart. I also use the Bootstrap carousel for the slides and place the carousel inside a Bootstrap modal as a lightbox. I'm not sure if it's the perfect way, but it works.. If anyone has a little bit of time to read my code and provide feedback, it will be appreciated.