/* Simple Spinner */

@-webkit-keyframes wait_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 wait_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 wait_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 wait_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);
  }
}

/* Absolute Center Spinner, with Transparent Overlay */

.wait_loading {
  content: '';
  display: block;
  position: fixed;
  z-index: 999;
  overflow: show;
  margin: auto;
  
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 50px;
  height: 50px;
}

/* Transparent Overlay */

.wait_loading:before {
  content: '';
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255,255,255,0.75);
}
  
/* :not(:required) hides these rules from IE9 and below */
.wait_loading:not(:required) {
  /* hide "loading..." text */
  /*
  font: 0/0 a;
  color: transparent;
  text-shadow: none;
  */
  border: 0;
  background-color: transparent;
}

.wait_loading:not(:required):after {
  content: '';
  display: block;
  /*
  font-size: 10px;
  */
  width: 50px;
  height: 50px;

  /*
  margin-top: -0.5em;
  */

  border: 5px solid rgba(33, 150, 243, 1.0);
  border-radius: 100%;
  border-bottom-color: transparent;

  -webkit-animation: wait_spinner 1s linear 0s infinite;
  animation: wait_spinner 1s linear 0s infinite;
}