Responive Page with Custom Dropdown Animated Menu

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

First I tried to use bootstrap for dropdown menu, but it was pain in my butt. I may use bootstrap in future, but now I just didn't like it. So I created a dropdown menu myself using scss and javascript. I like the animation. I love how softly it appears on the screen. I had to use different things to javascript to make the code universal so that I can use the same code for appearance of dropdown menu. Also I had difficulty in finding a way to hide the menu when outside the menu is clicked. I searched on google and after going through 10 to 15 websites I finally found the solution.

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

Please give feedback so I can improve and tell me about html and css practises. Am I doing things in correct way?