.popover {
    position: absolute;
    z-index: 1060;
    display: block;
    max-width: 276px;
    font-size: 14px;
    background-color: #fff;
    border: 1px solid rgba(0,0,0,.2);
    border-radius: .3rem;
    box-shadow: 0 .5rem 1rem rgba(0,0,0,.15);
}

.popover-header {
    padding: .5rem .75rem;
    margin: 0;
    font-size: 1rem;
    background-color: #f7f7f7;
    border-bottom: 1px solid #ebebeb;
}

.popover-body {
    padding: .5rem .75rem;
    color: #212529;
}

.bs-popover-top > .arrow {
    position: absolute;
    bottom: calc(-0.5rem - 1px);
    left: 50%;
    width: 1rem;
    height: .5rem;
}

.bs-popover-top > .arrow::before {
    content: "";
    position: absolute;
    border-width: .5rem .5rem 0;
    border-style: solid;
    border-color: rgba(0,0,0,.25) transparent transparent transparent;
}
.fade.show {
    opacity: 1;
}