html,
body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100%;
}


@media (max-width: 480px) {
  .mobile-screen {
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    position: relative;
  }
}