.popper {
    transition: background 250ms ease-in-out;
}
.fade-enter-active,
.fade-leave-active {
    transition: opacity 0.2s ease;
}
.fade-enter-from,
.fade-leave-to {
    opacity: 0;
}
.popper-arrow,
.popper-arrow::before {
    transition: background 250ms ease-in-out;
    position: absolute;
    width: 10px;
    height: 10px;
    box-sizing: border-box;
}
.popper-arrow {
    visibility: hidden;
}
.popper-arrow::before {
    visibility: visible;
    content: "";
    transform: rotate(45deg);
}

/* Top arrow */
.popper[data-popper-placement^="top"] > .popper-arrow {
    bottom: -5px;
}

/* Bottom arrow */
.popper[data-popper-placement^="bottom"] > .popper-arrow {
    top: -5px;
}

/* Left arrow */
.popper[data-popper-placement^="left"] > .popper-arrow {
    right: -5px;
}

/* Right arrow */
.popper[data-popper-placement^="right"] > .popper-arrow {
    left: -5px;
}