So, basically we two folder assests and product cards 

**assets contains
1. images
2. css  style.css
3. js   script.js
4. font

** product card popup folder
It mainly use for 
product card section means Notable work in portfolio
folder contains css and js of this part..

then we have main file index.html file it containes all code webpage code with comments 

in webpage code we have carousel which is created using owl carousel so its editable code is in seprate script.js file
in which you can ontrol speed of carousel....

Images folder contain few extra images also but i dont think it create any  issue..