.plus-loader:not(:required) {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 48px;
  margin-bottom: 10px;
  overflow: hidden;
  text-indent: -9999px;
  background: #f86;
  -moz-border-radius: 24px;
  -webkit-border-radius: 24px;
  border-radius: 24px;
  -moz-transform: rotateZ(90deg);
  -ms-transform: rotateZ(90deg);
  -webkit-transform: rotateZ(90deg);
  transform: rotateZ(90deg);
  -moz-transform-origin: 50% 50%;
  -ms-transform-origin: 50% 50%;
  -webkit-transform-origin: 50% 50%;
  transform-origin: 50% 50%;
  -moz-animation: plus-loader-background 3s infinite ease-in-out;
  -webkit-animation: plus-loader-background 3s infinite ease-in-out;
  animation: plus-loader-background 3s infinite ease-in-out;
}

.plus-loader:not(:required)::after {
  position: absolute;
  top: 0;
  right: 50%;
  width: 50%;
  height: 100%;
  content: "";
  background: #f86;
  -moz-border-radius: 24px 0 0 24px;
  -webkit-border-radius: 24px;
  border-radius: 24px 0 0 24px;
  -moz-transform-origin: 100% 50%;
  -ms-transform-origin: 100% 50%;
  -webkit-transform-origin: 100% 50%;
  transform-origin: 100% 50%;
  -moz-animation: plus-loader-top 3s infinite linear;
  -webkit-animation: plus-loader-top 3s infinite linear;
  animation: plus-loader-top 3s infinite linear;
}

.plus-loader:not(:required)::before {
  position: absolute;
  top: 0;
  right: 50%;
  width: 50%;
  height: 100%;
  content: "";
  background: #fc6;
  -moz-border-radius: 24px 0 0 24px;
  -webkit-border-radius: 24px;
  border-radius: 24px 0 0 24px;
  -moz-transform-origin: 100% 50%;
  -ms-transform-origin: 100% 50%;
  -webkit-transform-origin: 100% 50%;
  transform-origin: 100% 50%;
  -moz-animation: plus-loader-bottom 3s infinite linear;
  -webkit-animation: plus-loader-bottom 3s infinite linear;
  animation: plus-loader-bottom 3s infinite linear;
}

@keyframes plus-loader-top {
  2.5% {
    background: #f86;
    -moz-transform: rotateY(0deg);
    -ms-transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    -moz-animation-timing-function: ease-in;
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }

  13.75% {
    background: #ff430d;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  13.76% {
    background: #ffae0d;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: ease-out;
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }

  25% {
    background: #fc6;
    -moz-transform: rotateY(180deg);
    -ms-transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
  }

  27.5% {
    background: #fc6;
    -moz-transform: rotateY(180deg);
    -ms-transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
    -moz-animation-timing-function: ease-in;
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }

  41.25% {
    background: #ffae0d;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  41.26% {
    background: #2cc642;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: ease-out;
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }

  50% {
    background: #6d7;
    -moz-transform: rotateY(0deg);
    -ms-transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }

  52.5% {
    background: #6d7;
    -moz-transform: rotateY(0deg);
    -ms-transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    -moz-animation-timing-function: ease-in;
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }

  63.75% {
    background: #2cc642;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  63.76% {
    background: #1386d2;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: ease-out;
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }

  75% {
    background: #4ae;
    -moz-transform: rotateY(180deg);
    -ms-transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
  }

  77.5% {
    background: #4ae;
    -moz-transform: rotateY(180deg);
    -ms-transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
    -moz-animation-timing-function: ease-in;
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }

  91.25% {
    background: #1386d2;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  91.26% {
    background: #ff430d;
    -moz-transform: rotateY(90deg);
    -ms-transform: rotateY(90deg);
    -webkit-transform: rotateY(90deg);
    transform: rotateY(90deg);
    -moz-animation-timing-function: ease-in;
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }

  100% {
    background: #f86;
    -moz-transform: rotateY(0deg);
    -ms-transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }
}

@keyframes plus-loader-bottom {
  0% {
    background: #fc6;
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  50% {
    background: #fc6;
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  75% {
    background: #4ae;
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  100% {
    background: #4ae;
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }
}

@keyframes plus-loader-background {
  0% {
    background: #f86;
    -moz-transform: rotateZ(180deg);
    -ms-transform: rotateZ(180deg);
    -webkit-transform: rotateZ(180deg);
    transform: rotateZ(180deg);
  }

  25% {
    background: #f86;
    -moz-transform: rotateZ(180deg);
    -ms-transform: rotateZ(180deg);
    -webkit-transform: rotateZ(180deg);
    transform: rotateZ(180deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  27.5% {
    background: #6d7;
    -moz-transform: rotateZ(90deg);
    -ms-transform: rotateZ(90deg);
    -webkit-transform: rotateZ(90deg);
    transform: rotateZ(90deg);
  }

  50% {
    background: #6d7;
    -moz-transform: rotateZ(90deg);
    -ms-transform: rotateZ(90deg);
    -webkit-transform: rotateZ(90deg);
    transform: rotateZ(90deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  52.5% {
    background: #6d7;
    -moz-transform: rotateZ(0deg);
    -ms-transform: rotateZ(0deg);
    -webkit-transform: rotateZ(0deg);
    transform: rotateZ(0deg);
  }

  75% {
    background: #6d7;
    -moz-transform: rotateZ(0deg);
    -ms-transform: rotateZ(0deg);
    -webkit-transform: rotateZ(0deg);
    transform: rotateZ(0deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }

  77.5% {
    background: #f86;
    -moz-transform: rotateZ(270deg);
    -ms-transform: rotateZ(270deg);
    -webkit-transform: rotateZ(270deg);
    transform: rotateZ(270deg);
  }

  100% {
    background: #f86;
    -moz-transform: rotateZ(270deg);
    -ms-transform: rotateZ(270deg);
    -webkit-transform: rotateZ(270deg);
    transform: rotateZ(270deg);
    -moz-animation-timing-function: step-start;
    -webkit-animation-timing-function: step-start;
    animation-timing-function: step-start;
  }
}