.spinner {
  /* Spinner size and color */
  width: 1.5rem;
  height: 1.5rem;
  border-top-color: #444;
  border-left-color: #444;

  /* Additional spinner styles */
  -webkit-animation: spinner 400ms linear infinite;
          animation: spinner 400ms linear infinite;
  border-bottom-color: transparent;
  border-right-color: transparent;
  border-style: solid;
  border-width: 2px;
  border-radius: 50%;  
  -webkit-box-sizing: border-box;  
          box-sizing: border-box;
  display: inline-block;
  vertical-align: middle;
}

/* Animation styles */
@-webkit-keyframes spinner {
  0% { -webkit-transform: rotate(0deg); transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}
@keyframes spinner {
  0% { -webkit-transform: rotate(0deg); transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}


/* Optional — create your own variations! */
.spinner-large {
  width: 5rem;
  height: 5rem;
  border-width: 6px;
}

.spinner-slow {
  -webkit-animation: spinner 1s linear infinite;
          animation: spinner 1s linear infinite;
}

.spinner-blue {
  border-top-color: #09d;
  border-left-color: #09d;
}