.is-loading {
    position: relative;
    /*text-indent: -90000px;*/
    pointer-events: none;
    color: transparent !important;
    background: #ddd;

}

.is-loading:before {
    content: '';
    position: absolute;
    display: inline-block;
    width: 12px;
    height: 12px;

    top: 50%;
    left: 50%;
    margin-left: -7px;
    margin-top: -8px;
    border-radius: 50%;
    border: 2px solid transparent;
}

.is-loading:after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    top: 50%;
    left: 50%;
    margin-left: -7px;
    margin-top: -8px;
    border-radius: 50%;
    border: 2px solid #fff;
    border-top-color: transparent;
    -webkit-animation: spin 1s linear infinite;
    animation: spin 1s linear infinite;
}

@-webkit-keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}