.app-loading {
  position: relative;
  background-color: rgba(0, 0, 0, .3);
  height: 100%;
  width: 100%;
  z-index: 1150;
}
.app-loading .spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  margin: -100px 0 0 -100px;
}
.spinner.spinner-lg-custom:before {
  width: 200px;
  height: 200px;
}