Responsive accordian page using Flexbox and javascript

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

I'm really proud of completing this 2nd project on my own.

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

Javascript is really not what it seems like in tutorial videos I really need lot of more practice to work fluently in dom manipulation.

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

However im still not able to change the icon-plus and minus size in mobile sizes screen, if anybody knows how to achieve that using CSS, since width and height properties are not working for me. Your suggestions are most welcomed.