.tooltip {
    position: absolute;
    padding: 10px 13px;
    width: 450px;
    z-index: 2;

    color: #000;
    background-color: #fff;
    border: 1px solid #dee;

    font-family: sans-serif;
    font-size: 12px;
    line-height: 18px;
    text-align: left;
}

.tooltip.active {
    box-shadow: 1px 1px 6px #999;
    -webkit-box-shadow: 1px 1px 6px #999;
    -moz-box-shadow: 1px 1px 6px #999;
    behavior: url(/css/PIE.htc);
}

.tooltip em {
    color: #f00;
}