* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,
body {
  width: 100%;
  height: 100%;
}

.bg-layer {
  background-image: url("./construction.png");
  background-position: top center;
  background-repeat: no-repeat;
  background-size: cover;
  width: 100%;
  height: 100%;
}

@media (max-width: 768px) {
  .bg-layer {
    background-image: url("./mobile.png");
  }
}