.content_dropdown {
    display: none;
    position: absolute;
    right: 0;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

.content_dropdown a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: center;
}

.content_dropdown button {
    border: none;
    background: none;
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    width: 100%;
}

.content_dropdown a:hover {background-color: #f1f1f1;}
.content_dropdown button:hover {background-color: #f1f1f1;}
.drop_down:hover .content_dropdown {display: block;}