/* Absolute Center Spinner */
.loading {
     position: fixed;
     z-index: 9999;
     display: none;
     height: 2em;
     width: 2em;
     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: radial-gradient(rgba(20, 20, 20,.8), rgba(0, 0, 0, .8));
   
     background: -webkit-radial-gradient(rgba(20, 20, 20,.8), rgba(0, 0, 0,.8));
   }
   
   /* :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: 1em;
     height: 1em;
     margin-top: -0.5em;
     -webkit-animation: spinner 150ms infinite linear;
     -moz-animation: spinner 150ms infinite linear;
     -ms-animation: spinner 150ms infinite linear;
     -o-animation: spinner 150ms infinite linear;
     animation: spinner 150ms infinite linear;
     border-radius: 0.5em;
     -webkit-box-shadow: rgba(255,255,255, 0.75) 1.5em 0 0 0, rgba(255,255,255, 0.75) 1.1em 1.1em 0 0, rgba(255,255,255, 0.75) 0 1.5em 0 0, rgba(255,255,255, 0.75) -1.1em 1.1em 0 0, rgba(255,255,255, 0.75) -1.5em 0 0 0, rgba(255,255,255, 0.75) -1.1em -1.1em 0 0, rgba(255,255,255, 0.75) 0 -1.5em 0 0, rgba(255,255,255, 0.75) 1.1em -1.1em 0 0;
   box-shadow: rgba(255,255,255, 0.75) 1.5em 0 0 0, rgba(255,255,255, 0.75) 1.1em 1.1em 0 0, rgba(255,255,255, 0.75) 0 1.5em 0 0, rgba(255,255,255, 0.75) -1.1em 1.1em 0 0, rgba(255,255,255, 0.75) -1.5em 0 0 0, rgba(255,255,255, 0.75) -1.1em -1.1em 0 0, rgba(255,255,255, 0.75) 0 -1.5em 0 0, rgba(255,255,255, 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);
     }
   }