.loader {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  z-index: 1060;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
}
.loader .overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1040;
}
.loader .spinner-border {
  z-index: 1050;
}