._tooltip[tooltiptext]:after {
    content: attr(tooltiptext);
    position: absolute;
    border: var(--border);
    border-radius: var(--borderradius);
    padding: 5px;
    display: none;
    z-index: 100;
    background-color: #eee;
    color: #333;
    width: auto;
    min-width: 300px;
    max-width: 75vw;
    text-decoration: none;
    text-align: left;
    opacity: 0;
    transition: all .5s;
    line-height: normal;
    font-weight: lighter;
    font-size: smaller;
}

._tooltip[tooltiptext]:hover:after {
    opacity:1;
    display: block;
}