body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -2;
}

.overlay {
  background: rgba(0, 0, 0, 0.65);
  z-index: -1;
}