.tooltipTop{
    position: relative;
}
.tooltipTop:hover .lg-tooltip{
    visibility: visible;
}
.lg-tooltip{
    position: absolute;
    display: block;
    background-color: #ccc;
    padding: 5px;
    text-align: center;
    width: 200px;
    margin-left: 50%;
    left: -100px;
    visibility: hidden;
    top: 40px;
    color: #000;
}

.lg-tooltip:after
{
    content: '';
    position: absolute;
    border-style: solid;
    border-width: 0 12px 14px;
    border-color: #ccc transparent;
    display: block;
    width: 0;
    z-index: 1;
    margin-left: -12px;
    top: -14px;
    left: 50%;
}