quran/node_modules/react-toastify/scss/_icons.scss

.#{$rt-namespace}__spinner {
  width: 20px;
  height: 20px;
  box-sizing: border-box;
  border: 2px solid;
  border-radius: 100%;
  border-color: var(--toastify-spinner-color-empty-area);
  border-right-color: var(--toastify-spinner-color);
  animation: #{$rt-namespace}__spin 0.65s linear infinite;
}