#cover-spin {
  position: fixed;
  width: 100%;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.7);
  z-index: 9999;
  display: none;
}

@-webkit-keyframes spin {
  from {
    -webkit-transform: rotate(0deg);
  }
  to {
    -webkit-transform: rotate(360deg);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

#cover-spin::after {
  content: "";
  display: block;
  position: absolute;
  left: 48%;
  top: 40%;
  width: 40px;
  height: 40px;
  border-style: solid;
  border-color: black;
  border-top-color: transparent;
  border-width: 4px;
  border-radius: 50%;
  -webkit-animation: spin 0.8s linear infinite;
  animation: spin 0.8s linear infinite;
}