tampermonkey_script.css

.tooltip1 {
    position: relative;
    display: inline-block;
}

.description1 {
    display: none;
    position: absolute;
    padding: 2px 6px;
    font-size: 12px;
    line-height: 1.6em;
    color: #111;
    border-radius: 5px;
    background: #ccc;
    width: 40px;
}

.tooltip1:hover .description1 {
    display: inline-block;
    top: -4px;
    left: -42px;
}