HTML Code < link rel = "stylesheet" href = "https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" /> < div class = "topnav" id = "myTopnav" > < div class = "dropdown" > < button class = "dropbtn" >< b > Mechanism of wireless communication </ b > < i class = "fa fa-caret-down" ></ i > </ button > < div class = "dropdown-content" > < a href = "https://www.salimwireless.com/2022/05/mechanism-of-wireless-communication.html" >< b > Mechanism of wireless communication - step by step </ b ></ a > < a href = "https://www.salimwireless.com/2021/11/pathloss-in-wireless-communication.html" >< b > Pathloss & Delay spread in Modern Wireless Communication Systems </ b ></ a > < a href = "https://www.salimwireless.com/2...