#transtooltip {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    width: 275px;
    padding: 10px;
    border-radius: 6px;
    background: #fff;
    box-shadow:
        0 2px 8px rgba(0,0,0,.3),
        0 1px 2px rgba(0,0,0,.2);
    z-index: 9999;
}

#transtooltip.left {
    left: 0;
}

#transtooltip.right {
    right: 0;
}

#transtooltip::before {
    content: "";
    position: absolute;
    bottom: 100%;
    border: 12px solid transparent;
    border-top: 0;
    border-bottom-color: #fff;
}

#transtooltip.left::before {
    left: 16px;
}

#transtooltip.right::before {
    right: 16px;
}