li ul {
            display: none;
        }

        li:hover ul {
            display: block;
            position: absolute;
        }

        ul {
            list-style: none;
        }

        ul li {
            float: left;
        }

        li:hover li {
            float: none;
            margin-top: 10px;
            margin-left: -40px;
        }

        ul li a {
            background: orangered;
            padding: 5px 15px 5px 15px;
            text-decoration: none;
            color: white;
            margin-left: 1px;
        }

        ul li a:hover {
            background: orange
        }
#side1 #linkside1,
#side2 #linkside2,
#side3 #linkside3,
#side4 #linkside4 {
background-color:green;
cursor:default;
}