@nisix/ngx-loader/src/lib/loader/loader.css

awesome ngx loader

.ngx-loader-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  justify-content: center;
  align-items: center;
}

.ngx-loader {
  width: 50px;
  height: 50px;
  border: 6px solid #ccc;
  border-top-color: #3f51b5;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}