Hey Wael!
You homework looks pretty good, nice work! That said, there are a few problems that I found:

• main(), app.js: The main() function is referring to a variable which is present outside the function, which makes the main() an impure function! You should always pass these variables as an argument instead. Also, you have put the 'covers' object inside the function which not the best thing to do.

• Line 49, 78, app.js: The name 'header' is not the best choice for representing the element that will contain the book title. Similarly, 'image' is not the best variable name for storing the element which contains the image of a book cover.

• style.css: I see that you have styled HTML elements h1, h2, li, img directly instead of using classes. While this is not a problem for this assignment, you might run into problems when the websites start growing in size.

• Line 80, app.js: This isn't an issue but a note, I saw that you used underscores ('_') for the alt attribute. You don't really need to do that, the value of the alt attribute can contain spaces.

Best of luck!

Thank you very much Hardit for reviewing my assignment and for your valuable notes. I really appreciate the time you spent on this purpose!