dropbtn {
    background-color: black;
    color: white;
    padding: #px;
    font-size: #px;
    border: none;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: lightgrey;
    min-width: #px;
    z-index: 1;
}

.dropdown-content a {
    color: black;
    padding: #px #px;
    text-decoration: none;
    display: block;
}

.dropdown-content a:hover {background-color: white;}
.dropdown:hover .dropdown-content {display: block;}
.dropdown:hover .dropbtn {background-color: grey;}