/* Absolute Center Spinner */
.loading {
  position: fixed;
  z-index: 999;
  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-color: rgba(0,0,0,0.3);
}

/* :not(:required) hides these rules from IE9 and below */
.loading:not(:required) {
  /* hide "loading..." text */
  text-shadow: none;
  background-color: transparent;
  border: 0;
  margin: auto;
  margin-top: 0px;
}
.lds-roller {
    display: inline-block;
    position: fixed;
    width: 64px;
    height: 64px;
    overflow: show;
    margin: auto;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}
.lds-roller div {
    animation: lds-roller 1.2s cubic-bezier(.3,1.5,.2,7) infinite;
    transform-origin: 32px 32px;
}
.lds-roller div:after {
    content: " ";
    display: block;
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    margin: -3px 0 0 -3px;
}
.lds-roller div:nth-child(1) {
    animation-delay: -0.036s;
}
.lds-roller div:nth-child(1):after {
    top: 100px;
    left: 100px;
}
.lds-roller div:nth-child(2) {
    animation-delay: -0.072s;
}
.lds-roller div:nth-child(2):after {
    top: 108px;
    left: 90px;
}
.lds-roller div:nth-child(3) {
    animation-delay: -0.108s;
}
.lds-roller div:nth-child(3):after {
    top: 114px;
    left: 78px;
}
.lds-roller div:nth-child(4) {
    animation-delay: -0.144s;
}
.lds-roller div:nth-child(4):after {
    top: 116px;
    left: 64px;
}
.lds-roller div:nth-child(5) {
    animation-delay: -0.18s;
}
.lds-roller div:nth-child(5):after {
    top: 114px;
    left: 50px;
}
.lds-roller div:nth-child(6) {
    animation-delay: -0.216s;
}
.lds-roller div:nth-child(6):after {
    top: 108px;
    left: 38px;
}
.lds-roller div:nth-child(7) {
    animation-delay: -0.252s;
}
.lds-roller div:nth-child(7):after {
    top: 100px;
    left: 28px;
}
.lds-roller div:nth-child(8) {
    animation-delay: -0.288s;
}
.lds-roller div:nth-child(8):after {
    top: 90px;
    left: 20px;
}
@keyframes lds-roller {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}