.v2-item-ref {
    position: relative;
    padding-right: 2px;
    display: inline-block;
}

.v2-item-ref-popup {
    position: absolute;
    top: 100%;
    left: 50%;
    width: 200px;
    margin-left: -100px;
    animation: v2-item-ref-popup 100ms linear;
}

@keyframes v2-item-ref-popup {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}