.drts-map-map .cluster {
    background-color: rgba(170, 170, 170, 0.5);
    border-radius: 50%;
}

.drts-map-map .cluster > div {
    border-radius: 50%;
    height: 60%;
    width: 60%;
    background-color: #aaa;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
}

.drts-map-map .cluster > div > span {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.drts-map-marker-bounce {
    animation: drts-map-marker-bounce 0.5s infinite ease-in;
    -webkit-animation: drts-map-marker-bounce 0.5s infinite ease-in;
}

@keyframes drts-map-marker-bounce {
    0% {
        transform: translate(-50%, -130%) rotate(-45deg);
    }

    25%, 75% {
        transform: translate(-50%, -160%) rotate(-45deg);
    }

    50% {
        transform: translate(-50%, -190%) rotate(-45deg);
    }

    100% {
        transform: translate(-50%, -100%) rotate(-45deg);
    }
}

@-webkit-keyframes drts-map-marker-bounce {
    0% {
        -webkit-transform: translate(-50%, -130%) rotate(-45deg);
    }

    25%, 75% {
        -webkit-transform: translate(-50%, -160%) rotate(-45deg);
    }

    50% {
        -webkit-transform: translate(-50%, -190%) rotate(-45deg);
    }

    100% {
        -webkit-transform: translate(-50%, -100%) rotate(-45deg);
    }
}