electionDashboard/target/classes/static/assets/_scss/dashmix/_page-loader.scss

//
// Page Loader
// --------------------------------------------------

#page-loader {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: $primary;
  z-index: 999998;
  transform: translateY(-100%);

  &.show {
    transform: translateY(0);
  }

  &::after,
  &::before {
    position: absolute;
    top: 50%;
    left: 50%;
    display: block;
    border-radius: 100%;
    content: '';
    z-index: 999999;
  }

  &::after {
    margin-top: -160px;
    margin-left: -160px;
    width: 320px;
    height: 320px;
    background-color: rgba($white, .5);
    border: 4px solid rgba($white, .75);
    box-shadow: 0 0 100px rgba($black, .15);
    animation: page-loader-inner 1.25s infinite ease-out;
  }

  &::before {
    margin-top: -40px;
    margin-left: -40px;
    width: 80px;
    height: 80px;
    background-color: rgba($white, 1);
    animation: page-loader-outer 1.25s infinite ease-in;
  }
}


@keyframes page-loader-inner {
  0%, 40% {
    transform: scale(0);
  }

  100% {
    transform: scale(1);
    opacity: 0;
  }
}

@keyframes page-loader-outer {
  0% {
    transform: scale(1);
  }

  40%, 100% {
    transform: scale(0);
    opacity: 0;
  }
}