.loading {
    position: fixed;
    top: 0; right: 0;
    bottom: 0; left: 0;
    background: black;
    display: none;
    z-index: 101;
    opacity: 0.45;
}
.loader {
    left: 50%;
    margin-left: -4em;
    font-size: 10px;
    border: .7em solid var(--websitesmoke);
    border-left: .7em solid var(--websiteblue);
    animation: spin 0.85s infinite linear;
}
.loader, .loader:after {
    border-radius: 50%;
    width: 7em;
    height: 7em;
    display: block;
    position: absolute;
    top: 50%;
    margin-top: -4.05em;
}

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