.hasTooltip {
    position:relative;
}
.hasTooltip .show {
    display:none;
}

.hasTooltip:hover .show {
    display:inline-block;
    background-color:black;
    border-radius:5px;
    color:white;
    box-shadow:1px 1px 3px gray;
    position:absolute;
    padding:5px;
    top:1.3em;
    left:0px;
    min-width: 400px;
    max-height:300px;
    white-space: normal;
    overflow: auto;
    word-wrap:break-word;
    z-index: 9;
}

.urltooltip {
    color: yellow;
}