spinner css

spinner.css

.spinner {
  -webkit-animation-duration: 1s;
  -webkit-animation-iteration-count: infinite;
  -webkit-animation-timing-function: linear;
  background: url(data:image/png;base64,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) 0 50% no-repeat;
  background-size: 16px;
  ....
}