body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, sans-serif;
  background-color: #f9eec4;
  color: #555;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  font-size: 8vw;
}

.dot {
  opacity: 0.3;
  animation-duration: 1.5s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

.dot1 {
  animation-name: dot1Animation;
}

.dot2 {
  animation-name: dot2Animation;
  animation-delay: 0.5s;
}

.dot3 {
  animation-name: dot3Animation;
  animation-delay: 1s;
}

@keyframes dot1Animation {
  0%, 20%, 100% {
      opacity: 0.3;
  }
  10% {
      opacity: 1;
  }
}

@keyframes dot2Animation {
  0%, 20%, 100% {
      opacity: 0.3;
  }
  10% {
      opacity: 1;
  }
}

@keyframes dot3Animation {
  0%, 20%, 100% {
      opacity: 0.3;
  }
  10% {
      opacity: 1;
  }
}

@media (min-width: 481px) and (max-width: 768px) {
  .container {
      font-size: 8vw;
  }
}

@media (min-width: 769px) {
  .container {
      font-size: 4rem;
  }
}