Responsive Flex and Grid box using media queries. HTML, CSS, jQuery

What are you most proud of, and what would you do differently next time?

My most proud of is that the responsive of the buttons, functions, handling exceptions, and error exception I have done it very excellently.

What challenges did you encounter, and how did you overcome them?

My challenges that I have encounter is that in the media query the svg is not quite working, but I have fix it. How to redirect a page, and some handling exceptions.

What specific areas of your project would you like help with?

My specific areas that I would like to help is that the validation and redirection of a page that the user didn't input any values. I want it to be redirect to a page, and then some error message will show.