body {
  font-family: Arial;
  background-color: #1e1e1e;
}

.app-loader {
  width: 10em;
  height: 10em;
  line-height: 10em;
  font-size: 1.4em;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: rgb(133, 208, 246);
}

.app-loader::before {
  content: " ";
  border: 16px solid rgba(60, 206, 67, 0.1);
  border-top: 16px solid rgb(133, 208, 246);
  border-bottom: 16px solid rgb(133, 208, 246);
  border-radius: 50%;
  animation: spin 10s linear infinite;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  box-sizing: border-box;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(1800deg);
  }
}