* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  color: white;
}

body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('images/bg-pk.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(50%);
  z-index: -1;
}

h1 {
  text-align: center;
  padding: 0 15px;
  font-size: 24px;
  animation: blink 2.25s infinite;

  @media (max-width: 475px) {
    font-size: 18px;
  }
}

@keyframes blink {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}