body {
  font-family: "Hiragino Mincho ProN W3", serif;
  background-color: #fff;
  color: #0F261F;
}

h1 {
  font-family: "Hiragino Mincho ProN W6", serif;
  color: #FA2B00;
}

h1 img {
  width: 100px;
  margin-right: 10px;
}

a {
  color: #4F8FE6;
}

.updater {
  width: 200px;
  height: 200px;
  background: #fff;
  border: 10px solid #0F261F;
}

@media (prefers-color-scheme: dark) {
  body {
    color: #fff;
    background: #0F261F;
  }

  .updater {
    background: #0F261F;
    border: 10px solid #fff;
  }
}