#loading-bg {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 500;
}
#loader {
  z-index: 510;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Change loader below, from: https://cssloaders.github.io/ */
/* LOADER STYLE START */

.loader {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: block;
  margin:15px auto;
  position: relative;
  box-sizing: border-box;
  animation: rotation 1s linear infinite;
}
.loader::after,
.loader::before {
  content: '';  
  box-sizing: border-box;
  position: absolute;
  left: 0;
  top: 0;
  background: #ED1D24;
  width: 16px;
  height: 16px;
  transform: translate(-50%, 50%);
  border-radius: 50%;
}
.loader::before {
  left: auto;
  right: 0;
  background: #FFF;
  transform: translate(50%, 100%);
}

@keyframes rotation {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
} 

/*  LOADER STYLE END */