.tooltipBPM {
    position: relative;
    display: inline-block;
}

    .tooltipBPM .tooltiptext {
        visibility: hidden;
        width: 65px;
        background-color: grey;
        color: #fff;
        text-align: center;
        border-radius: 6px;
        padding: 5px 0;
        position: absolute;
        z-index: 1;
        top: 120%;
        left: 46%;
        margin-left: -30px;
        border: 2px;
    }

        .tooltipBPM .tooltiptext::after {
            content: "";
            position: absolute;
            bottom: 100%;
            left: 50%;
            margin-left: -5px;
            border-width: 5px;
            border-style: solid;
            border-color: transparent transparent grey transparent;
        }

    .tooltipBPM:hover .tooltiptext {
        visibility: visible;
    }

.modal-backdrop {
    opacity: 0.5 !important;
}