Ayodeji

I am working on a new website for my wife. I tried to make it mobile responsive by using the w3css collapsible navbar with its accompanying javascript and it was working fine. I later tried to make the navbar sticky to improve on the user experience. On introducing the sticky navbar with its accompanying javascript, it becomes sticky on both desktop and mobile but the menu button on mobile stopped working although it is displayed. file.html

Can someone please help? I am trying to use the w3css- collapsing the navigation bar. I copied the snippet into my code but the navigation bar is not even showing in the browser window. I don't know why it is not showing at all talk less of functioning properly. I have attached my code. Can someone please figure out this for me. index.html