Portfolio feedback . Personal Portfolio. Help please

My code doesn’t work right. And I cannot find the mistake.


What behaviour are you expecting and what’s going wrong?

Hello. Problem is with small/mobile version of site.
How to make my .portfolio-item to move on to the next line.
And also how to move footer items on the next line.

@Bronza, codepen provides you with validators for HTML, CSS and JS so you can check your code. Just click on the arrow in the upper right and then click on the respective ‘Analyze’ button.
You have a couple of errors (typo’s) in CSS that will resolve the issue you’re seeing.

It looks cool. Is it 100% original code or some bootstrap was used to make it?