body {
  background-color: #000;
  opacity: 0;
  transition: opacity 0.3s ease;
  font-family:Arial, Helvetica, sans-serif;
}

body.content-loaded {
  opacity: 1;
}

body.page-transition {
  opacity: 0;
}

.bg-loading {
  position: relative;
}

.bg-loading::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 0;
  transition: opacity 0.5s ease;
}

.bg-loaded::before {
  opacity: 0;
}

.lazy-background {
  background-image: none;
  background-color: #000;
  transition: background-image 0.2s ease-in;
}