I’ve done all code challenges according to the given instruction. Please check the codes & output as shared below:

Please check my PHP/HTML code here: https://github.com/asadkuet/Code-Challenge/blob/main/1.%20PHP-HTML%20challenge.php

Output:

Here's my JS/HTML/CSS code: https://github.com/asadkuet/Code-Challenge/blob/main/2.%20JS-HTML-CSS%20challenge.html

Output in my JSfiddle Link: https://jsfiddle.net/oLtznwc2/

And this is my MySQL Query: https://github.com/asadkuet/Code-Challenge/blob/main/3.%20Mysql%20Challenge.sql

Query Results: