Dropdown Menus Using HTML & CSS

YouTube Video Link   HTML CODE: <!DOCTYPE html> <html>     <head>         <title>Dropdown</title>        <link rel="stylesheet" href="htmldrop.css">        <meta name="viewport" content="width=device-width, initial-scale=1.0">          </head>     <body>         <div class="topnav">             <a href="">Home</a>             <a href="">Contact</a>             <a href="">Location</a>             <a href="" class="confused">Subscribe</a>             <div class="abdrop">                 <a href="" class="abnav">About</a>         ...
Image