.cdd-btn-cont {
    position: fixed;
    /*box-shadow: 2px 2px 7px rgba(0, 0, 0, 0.2);*/
    cursor: pointer;
    pointer-events: none;
    z-index: 3;
    min-width: 186px;
    height: 186px;
    display: none;
}

    .cdd-btn-cont.show {
        display: block;
        border-radius: 50%;
        pointer-events: auto;
    }

.node.show-btn {
    z-index: 2 !important;
}

.cdd-main {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.circle-dd-sub {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: all 0.3s ease;
    opacity: 0;
    pointer-events: none;
}

    .circle-dd-sub.show {
        opacity: 1;
        pointer-events: auto;
    }