.popover.bottom>.arrow {
    top: -11px;
    left: 50%;
    margin-left: -11px;
    border-top-width: 0;
    border-bottom-color: #999;
    border-bottom-color: rgba(0,0,0,.25);
}
.popover .arrow {
    position: absolute;
    display: block;
    width: 1rem;
    height: .5rem;
    margin: 0 .3rem;
}
.popover>.arrow { border-width: 11px; }
.popover>.arrow, .popover>.arrow:after {
    position: absolute;
    display: block;
    width: 0;
    height: 0;
    border-color: transparent;
    border-style: solid;
}
.popover.bottom { margin-top: 10px; }
.fade.in { opacity: 1; }
.popover {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1060;
    display: block;
    max-width: 276px;
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
    text-align: left;
    text-align: start;
    text-decoration: none;
    text-shadow: none;
    text-transform: none;
    letter-spacing: normal;
    word-break: normal;
    word-spacing: normal;
    white-space: normal;
    line-break: auto;
    font-size: .875rem;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0,0,0,.2);
    border-radius: .3rem;
}
.fade {
    opacity: 0;
    transition: opacity .15s linear;
}
.popover .arrow::after, .popover .arrow::before {
    position: absolute;
    display: block;
    content: "";
    border-color: transparent;
    border-style: solid;
}

*, ::after, ::before { box-sizing: border-box; }
.popover.bottom>.arrow:after {
    top: 1px;
    margin-left: -10px;
    content: " ";
    border-top-width: 0;
    border-bottom-color: #fff;
}

.popover .arrow::after, .popover .arrow::before {
    position: absolute;
    display: block;
    content: "";
    border-color: transparent;
    border-style: solid;
}
.popover>.arrow:after {
    content: "";
    border-width: 10px;
}
.popover>.arrow, .popover>.arrow:after {
    position: absolute;
    display: block;
    width: 0;
    height: 0;
    border-color: transparent;
    border-style: solid;
}
*, ::after, ::before { box-sizing: border-box; }
.popover-content { padding: 9px 14px; }