styles.css

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800&display=swap');

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

._game_container {
  max-width: 480px;
  margin: auto;
}

._intro_container {
  min-height: 100vh;
  text-align: center;
  position: relative;
  padding: 50% 0;
}

._intro_container p {
  font-size: 14px;
  margin: auto;
  margin-bottom: 20px;
  line-height: 1.8;
  max-width: 90%;
}

h1._title {
  font-size: 20px;
  padding: 10px 0;
}

@keyframes jedagjedug {
  0% {
    font-size: 12px;
  }

  25% {
    font-size: 8px;
  }

  50% {
    font-size: 12px;
  }

  75% {
    font-size: 8px;
  }

  100% {
    font-size: 12px;
  }
}

._tombol_tampol {
  position: relative;
  animation: jedagjedug 5s infinite;
}