a {
  text-decoration: none;
}

nav {
    font-family: Verdana, Arial, Helvetica, sans-serif; 
    position:relative;
    z-index:9999;    
}

ul {
  background: darkorange;
    list-style: none;
    margin: 0;
    padding-left: 0;
 text-align: center;
 }

li {
    color: #fff;
    background: darkorange;
    font-size:16px;
    display: block;
    float: left;
    padding: 0.7rem; /* height of top orange menu*/    
    position: relative;
    text-decoration: none;
    transition-duration: 0.5s;
     width: 10.5%;/*top orange menu item width*/
}
  
li a {
  color: #fff;  
}
 
li:hover {
    background: red;    
	font-size:14px;
    cursor: pointer;
} 

    li:after {
        content: '\00bb';
        font-size:15px;   
    }
ul li ul {
    background: orange;
   
    visibility: hidden;
    opacity: 0.6;
    min-width: 8.8rem; /*Submenu width*/
    position: absolute;
    transition: all 0.5s ease;
    margin-top: 0.5rem;/* gap between horizantal menu and dropdown menu*/
    left: 0;
    display: none;
}

ul li:hover > ul,
ul li ul:hover {
  visibility: visible;
  opacity: 1;
  display: block;
}

ul li:hover > ul,
ul li ul:active {
font-size: 24px;
}

ul li ul li {
  clear: both;
  width: 100%;/*Submenu width*/
}