@charset "UTF-8";
* {
  box-sizing: border-box;
}

html {
  font-size: 18px;
  font-family: "メイリオ", "MS Gothic", "ＭＳ 明朝";
  color: white;
}
html body {
  margin: 30px auto;
  width: 1000px;
}
@media (max-width: 1200px) {
  html body {
    width: 90%;
  }
}
html body h1#title {
  font-size: 60px;
  text-align: center;
}
html body footer {
  position: fixed;
  bottom: 0;
  right: 0;
  left: 0;
}
html body footer #since {
  display: block;
  margin: auto 0;
  text-align: center;
}
html body main #updated-date {
  text-align: center;
}
html body div#background {
  z-index: -100;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgb(79, 164, 255);
}