.loading-screen {
  position: fixed;
  display: block;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-color: black;
  z-index: 100;
  transition: 1s;
}

.loader {
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
  width: 10px;
  height: 40px;
  animation: spin 1s infinite;
  background-color: white;

}

@keyframes spin {
  0% {
    transform: rotate(90deg);
    border-radius: 20px;
  }
  100% {
    transform: rotate(270deg);
    border-radius: 20px;
  }
}