dev/scss/base/load.scss

div.loading {
  background-color: transparent !important;
  height: 16px !important;
  width: 16px !important;
  margin: 0 auto !important;
}

.loading {
  background: {
    position: center;
    repeat: no-repeat;
    image: url('data:image/gif;base64,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');
  }
}