a .title-hover {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 2px;
    padding: 5px;
    border-radius: 5px;
    background-color: white;
    border: 1px solid grey;
    color: black;
    z-index: 100;
    font-weight: bold;
    text-decoration: none !important;
    min-width: 180px;
    text-align: center;
}
a:hover .title-hover {
    display: inline-block;
    text-decoration: none !important;
}