body{color:#999}.popover{background:#fff;border:1px solid rgba(0,0,0,.2);border-radius:.3rem;box-shadow:0 .5rem 1rem rgba(0,0,0,.15);font-family:Arial,sans-serif;font-size:16px;max-width:320px;min-width:260px;padding:0}.popover-header{background-color:#f7f7f7;border-bottom:1px solid #ebebeb;border-radius:.3rem .3rem 0 0;font-weight:700;margin-bottom:0;padding:.5rem .75rem}.popover-body{padding:.75rem 1rem}.popover:after{border-color:#fff transparent transparent;border-style:solid;border-width:8px 8px 0;bottom:-8px;content:"";filter:drop-shadow(0 1px 1px rgba(0,0,0,.1));left:50%;position:absolute;transform:translateX(-50%)}.center-btn{align-items:center;display:flex;justify-content:center;min-height:100vh}