.gpopover
{
    background-color: #fff;
    border: 1px solid #ccc;
    border-color: rgba(0,0,0,.2);
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(0,0,0,.1);
    display: none;
    padding: 12px;
    position: absolute;
    z-index: 998;
}
.gpopover .gpopover-arrow
{
    border: 8px solid transparent;
    border-bottom-color: #fff;
    border-top-width: 0;
    height: 0;
    position: absolute;
    width: 0;
    z-index: 999;
}
.gpopover .gpopover-arrow-shadow
{
    border: 8px solid transparent;
    border-bottom-color: #c0c0c0;
    border-bottom-color: rgba(0,0,0,.275);
    border-top-width: 0;
    height: 0;
    position: absolute;
    width: 0;
    z-index: 997;
}