.grid > div {
  display: none !important;
}

.grid .variable-loader {
  display: block !important;
}

.grid > main {
  display: none !important;
}

.variable-loader {
  width: 6em;
  height: 6em;
  margin: 55px auto;
  position: relative;
  top: -0.1em;
  left: -0.1em;
}
.variable-loader:after {
  content: " ";
  display: block;
  width: 6em;
  height: 6em;
  margin: 1px;
  border-radius: 50%;
  border: 5px solid #000000;
  border-color: #000000 transparent #000000 transparent;
  animation: load-animation 1.2s linear infinite;
}
@keyframes load-animation {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}