.spinner-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(62, 61, 61, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
      border: 6px solid #bfbfbf;
    border-top: 6px solid green;
    border-bottom: 6px solid green;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 0.3s linear infinite
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}