.loading-wheel {
  width: 20px;
  height: 20px;
  margin-top: 80px;
  margin-left: -30px;
  
  position: relative;
  top: 50%;
  left: 50%;
  
  border-width: 30px;
  border-radius: 50%;
  -webkit-animation: spin 1s linear infinite;
}
.style-2 .loading-wheel {
  border-style: double;
  border-color: #ccc transparent;
}
@-webkit-keyframes spin {
  0% {
      -webkit-transform: rotate(0);
  }
  100% {
      -webkit-transform: rotate(-360deg);
  }
}