body {
  height: 100%;
}

.position-absolute {
  position: absolute !important;
}

.bg-light {
  background-color: #f8f9fa !important;
}

.spinner-grow {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  vertical-align: text-bottom;
  background-color: currentColor;
  border-radius: 50%;
  opacity: 0;
  -webkit-animation: spinner-grow 0.75s linear infinite;
  animation: spinner-grow 0.75s linear infinite;
}

@-webkit-keyframes spinner-grow{0%{-webkit-transform:scale(0);transform:scale(0)}50%{opacity:1;-webkit-transform:none;transform:none}}
@keyframes spinner-grow{0%{-webkit-transform:scale(0);transform:scale(0)}50%{opacity:1;-webkit-transform:none;transform:none}}