oggui/ogWebconsole/src/app/shared/loading/loading.component.css

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 99999;
}