This is practice / reference project.
Honestly, I never use jQuery because I do almost everything using a framework such as React. However, you may find jQuery useful if you're building a pure html website. jQuery is a JavaScript library that can help to reduce the amount of coed you need to write, as well as making it a little more readable.
There is also an example of CSS grid in this project.
- HTML
- CSS
- JavaScript (jQuery)
Have a look at the main.js file to see how the jQuery functions are written
feel free to use this practice project as reference!