.working-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    opacity: .50;
    -webkit-opacity: .5;
    -moz-opacity: .5;
    filter: alpha(opacity=50);
    z-index: 10;
}

.working-modal {
    width: 300px;
    height: 200px;
    /*line-height: 200px;*/
    position: fixed;
    top: 50%;
    left: 50%;
    margin-top: -100px;
    margin-left: -150px;
    color: whitesmoke;
    background-color: #428bca;
    border-radius: 5px;
    text-align: center;
    z-index: 12; /* 1px higher than the overlay layer */
}

.working-animation {
    position: relative;
    /*text-align: center;*/
    margin: 25px auto 35px auto;
    z-index: 11;
    display: block;
    width: 80px;
    height: 80px;
    border: 10px solid rgba(0, 0, 0, .3);
    border-radius: 50%;
    border-top-color: #000;
    animation: spin 1s ease-in-out infinite;
    -webkit-animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        -webkit-transform: rotate(360deg);
    }
}

@-webkit-keyframes spin {
    to {
        -webkit-transform: rotate(360deg);
    }
}