Sass, js and flexbox

This project has made me realize I need to go and do a bit more studying on making navbars. I'm fine with making a mobile nav. it's converting it into a desktop version I'm having issues with.

I also had a problem positioning the mobile phone's image. I set the section to overflow hidden, to stop the circles coming outside the section. I then couldn't bring the picture of the mobile phones on top of it. In the end, I set it to an after pseudo-element on the section before and pushed it down.

I also time in myself this time it took me 8 hours and 29 minutes.

Any feedback would be appreciated thank you.