.preloader-container {
  position: absolute;
  top: calc(50% - 75px);
  left: calc(50%);
  transform: translateX(-50%);
  -webkit-transform: translateX(-50%);
  -moz-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  -o-transform: translateX(-50%);
}

.custom-preloader,
.custom-preloader:after {
  border-radius: 50%;
  width: 16em;
  height: 16em;
}
.default-preloader,
.default-preloader:after {
  border-radius: 50%;
  width: 16em;
  height: 16em;
}
.default-preloader {
  position: relative;
  width: 100px;
  height: 100px;
  font-size: 6px;
  text-indent: -9999em;
  border-top: 1.1em solid #8C9BB020;
  border-right: 1.1em solid #8C9BB020;
  border-bottom: 1.1em solid #8C9BB020;
  border-left: 1.1em solid #21A2F1;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -o-transform: translateZ(0);
  animation: svg-ring 1.1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  -webkit-animation: svg-ring 1.1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

@keyframes svg-ring {
  0% {
    transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
  }
}