.preloader {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: #fe8632;
  z-index: 1000;
  -webkit-transition: all 1s;
  -o-transition: all 1s;
  transition: all 1s;
  opacity: 1;
  visibility: visible;
}

.loading {
  width: 80px;
  height: 80px;
  border: 5px solid rgba(255, 255, 255, 0.5);
  border-top-color: white;
  border-radius: 50%;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  animation: spin 1s infinite linear;
}

.done {
  opacity: 0;
  visibility: hidden;
}

@keyframes spin {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}