TooltipReferences.css

.referencetooltip {
    position: absolute;
    list-style: none;
    list-style-image: none;
    margin: 0;
    z-index: 5;
    opacity: 0;
    border: #080086 2px solid;
    max-width: 260px;
    padding: 10px 8px 13px 8px;
    margin: 0px;
    background-color: #F7F7F7;
    box-shadow: 2px 4px 2px rgba(0,0,0,0.3);
    -webkit-box-shadow: 2px 4px 2px rgba(0,0,0,0.3);
}
.referencetooltip.hidden {
    opacity: 0;
    transition: opacity 100ms ease-out 0s;
    -moz-transition: opacity 100ms ease-out 0s;
}
.referencetooltip.shown {
    opacity: 1;
    transition: opacity 100ms ease-in 0s;
    -moz-transition: opacity 100ms ease-in 0s;
}