.on-loading {
  margin: auto;
  border-style: solid;
  border-color: $secondary;
  border-top-color: $primary;
  border-radius: 50%;

  -webkit-animation: spin 0.75s linear infinite; /* Safari, Chrome and Opera > 12.1 */
  -moz-animation: spin 0.75s linear infinite; /* Firefox < 16 */
  -ms-animation: spin 0.75s linear infinite; /* Internet Explorer */
  -o-animation: spin 0.75s linear infinite; /* Opera < 12.1 */
  animation: spin 0.75s linear infinite;

  border-width: 8px;
  width: 75px;
  height: 75px;

  .ob-list__avatar & {
    border-width: 2px;
    width: 25px;
    height: 25px;
  }

  &.small {
    border-width: 5px;
    width: 50px;
    height: 50px;
  }

  &.large {
    border-width: 10px;
    width: 100px;
    height: 100px;
  }

  &.tiny {
    border-width: 2px;
    width: 24px;
    height: 24px;
    border-right-color: $primary;
  }

  button & {
    border-width: 2px;
    width: 20px;
    height: 20px;
  }
}

on-loading {
  button & {
    display: flex;
    align-items: center;
    height: 100%;
  }
}