* {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

html,
body {
  color: #fff;
  font-family: "Noto Sans JP", sans-serif;
  padding: 0;
  margin: 0;
  background-color: #000;
}

a {
  color: inherit;
  text-decoration: none;
}

main {
  min-height: 100vh;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  position: relative;
}
main .logo {
  max-width: 600px;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
main .text {
  color: #000;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  padding: 24px;
  background-color: #fff;
  border-radius: 12px;
  -webkit-filter: drop-shadow(2px 4px 6px black);
          filter: drop-shadow(2px 4px 6px black);
}