.cover {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.7);
  z-index: 9999;
  display: none;
}

.loader-container {
  position: fixed;
  z-index: 9999;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transform: -webkit-translate(-50%, -50%);
  transform: -moz-translate(-50%, -50%);
  transform: -ms-translate(-50%, -50%);
}

.loader {
  margin: auto;
  border: 5px solid #f3f3f3;
  border-top: 5px solid #000;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  animation: spin 2s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}