#preloader {
  display: none;
  position: fixed;
  background-color: white;
  opacity: 0.7;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999
}

#preloader-msg {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  color: Maroon;
  font-size: medium;
  font-weight: bold;
  margin: 50px 0 0 -72px;
  z-index: 999
}

#preloader #preloader-inner {
  display: block;
  position: relative;
  left: 50%;
  top: 50%;
  width: 100px;
  height: 100px;
  margin: -75px 0 0 -75px;
  border-radius: 50%;
  border: 5px solid transparent;
  border-top-color: #3498db;
  border-bottom-color: #3498db;
  animation: spin 2.5s linear infinite;
}

#preloader #preloader-inner:before {
  content: "";
  position: absolute;
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border-radius: 50%;
  border: 5px solid transparent;
  border-top-color: #e74c3c;
  animation: spin 3s linear infinite;
}

#preloader #preloader-inner:after {
  content: "";
  position: absolute;
  top: 15px;
  left: 15px;
  right: 15px;
  bottom: 15px;
  border-radius: 50%;
  border: 5px solid transparent;
  border-top-color: #f9c922;
  animation: spin 4s linear infinite;
}

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