.spinner {
  width: 40px;
  height: 40px;
  margin: 20px auto;
  position: relative;
  text-align: center;
  -webkit-animation: rotate 2s linear infinite;
  animation: rotate 2s linear infinite;
}

@-webkit-keyframes rotate {
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@keyframes rotate {
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

.spinner:before {
  content: "";
  display: block;
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-top-color: #007bff;
  -webkit-animation: spin 1.5s ease-in-out infinite;
  animation: spin 1.5s ease-in-out infinite;
}

@-webkit-keyframes spin {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@keyframes spin {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}