html {
  font-size: 16px;
}
@media screen and (max-width: 768px) {
  html {
    font-size: 3.4vw;
  }
}

body {
  font-family: "Noto Sans JP", serif;
  color: #1B3B5F;
  line-height: 2;
  background-color: #FAFAFA;
}

a {
  transition: 0.3s;
}

@keyframes fadein {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}