.ajax-throbber.sk-spinner-pulse {
    position: inherit;
    background-color: #333;
    border-radius: 100%;
    -webkit-animation: sk-pulseScaleOut 1s infinite ease-in-out;
    animation: sk-pulseScaleOut 1s infinite ease-in-out;
}

@-webkit-keyframes sk-pulseScaleOut {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0);
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 0;
    }
}

@keyframes sk-pulseScaleOut {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0);
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 0;
    }
}