User:Moo/test.css

abbr[title]:active {
    position: relative;
    color: #266666;
}

abbr[title]:active::after {
    content: attr(title);
    background-color: #ded4c4;
    color: #266666;
    position: absolute;
    left: 2em;
    bottom: 2em;
    border: 1px solid;
    border-radius: 10px;
    width: max-content;
    max-width: 250px;
    padding: 3px;
    z-index: 10;
}