:root {
  --red: #bd1e24;
}
html {
  font-family: "Noto Sans JP", "Source Han Sans JP", "Meiryo", sans-serif;
  scrollbar-width: none;
  scroll-behavior: smooth;
  /* cursor: context-menu; */
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  /* background-clip: content-box; */
  body {
    position: relative;
    height: 100vh;
    width: 100vw;
    text-align: center;
    display: grid;
    justify-content: center;
    align-content: center;
    align-items: center;
    justify-items: center;
    margin: 0;
    padding: 0;
    border: none;
    pointer-events: none;
    main {
      font-size: 2em;
      font-weight: bold;
      color: var(--red);
    }
    footer {
      position: absolute;
      display: grid;
      width: 100%;
      bottom: 0;
      font-size: .5em;
      justify-content: start;
      color: #ccc;
    }
  }
}