This site, below is the design requested by the designer
You can see that i kinda did it on mobile but it opens from the outside in, and other problem is that it uses the <body> , it pushes body inside.
If I display the mobile menu on desktop it won’t open, I tried using some variations of this
But didn’t work, I’m using WordPress menu so I don’t have too many choices when it comes to classes or structure. you can see some of my attempts here