/* Absolute Center Spinner */
.loading {
    border: 16px solid #f3f3f3;
    border-radius: 50%;
    border-top: 16px solid blue;
    border-right: 16px solid green;
    border-bottom: 16px solid red;
    width: 120px;
    height: 120px;
    position: fixed;
    z-index: 999;
    overflow: show;
    margin: auto;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}

/* Transparent Overlay */
.loading:before {
    content: '';
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
     background-color: rgba(0,0,0,0.3);
}

/* :not(:required) hides these rules from IE9 and below */
.loading:not(:required) {
   /* hide "loading..." text */
    font: 0/0 a;
    color: transparent;
    text-shadow: none;
    background-color: transparent;
    border: 0;
}

.loading:not(:required):after {
     content: '';
     display: block;
     font-size: 10px;
     width: 120px;
     height: 120px;
     margin-top: -0.5em;
     -webkit-animation: spinner 1500ms infinite linear;
     -moz-animation: spinner 1500ms infinite linear;
     -ms-animation: spinner 1500ms infinite linear;
     -o-animation: spinner 1500ms infinite linear;
     animation: spinner 1500ms infinite linear;
     /*border-radius: 0.5em;*/
     border: 16px solid #f3f3f3;
     border-radius: 50%;
     border-top: 16px solid blue;
     border-right: 16px solid green;
     border-bottom: 16px solid red;
    /*-webkit-box-shadow: rgba(0, 0, 0, 0.75) 1.5em 0 0 0, rgba(0, 0, 0, 0.75) 1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) 0 1.5em 0 0, rgba(0, 0, 0, 0.75) -1.1em 1.1em 0 0, rgba(0, 0, 0, 0.5) -1.5em 0 0 0, rgba(0, 0, 0, 0.5) -1.1em -1.1em 0 0, rgba(0, 0, 0, 0.75) 0 -1.5em 0 0, rgba(0, 0, 0, 0.75) 1.1em -1.1em 0 0;
    box-shadow: rgba(0, 0, 0, 0.75) 1.5em 0 0 0, rgba(0, 0, 0, 0.75) 1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) 0 1.5em 0 0, rgba(0, 0, 0, 0.75) -1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) -1.5em 0 0 0, rgba(0, 0, 0, 0.75) -1.1em -1.1em 0 0, rgba(0, 0, 0, 0.75) 0 -1.5em 0 0, rgba(0, 0, 0, 0.75) 1.1em -1.1em 0 0;*/
}

/* Animation */
@-webkit-keyframes spinner {
    0% {
        -webkit-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@-moz-keyframes spinner {
    0% {
        -webkit-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@-o-keyframes spinner {
    0% {
        -webkit-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@keyframes spinner {
    0% {
        -webkit-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}