@import url('https://fonts.googleapis.com/css?family=Noto+Serif+JP&display=swap');

body {
  font-family: 'Noto Serif JP';
  width: 100%;
  height: auto;
  background-color: #ffffff;
}

.fadeIn {
  margin: 25px;
  animation-name: fadeInAnime;
  animation-duration: 3s;
  animation-fill-mode: forwards;
  opacity: 0;
}

@keyframes fadeInAnime {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.txt {
  font-size: 50px;
  text-align: center;
}

.scroll {
  padding: 10px;
  text-align: center;
  margin: 20px;
}

.scroll::before {
  animation: scroll 3.5s infinite;
  border: solid #000;
  border-width: 0 0 4px 4px;
  content: "";
  display: inline-block;
  margin: 10px;
  top: 0;
  right: 0;
  left: 0;
  transform: rotate(-45deg);
  width: 20px;
  height: 20px;
  text-align: center;
}

@keyframes scroll {
  0% {
    transform: rotate(-45deg) translate(0, 0);
  }

  80% {
    transform: rotate(-45deg) translate(-30px, 30px);
  }

  0%,
  80%,
  100% {
    opacity: 0;
  }

  40% {
    opacity: 1;
  }
}

p {
  font-size: 80px;
  text-align: center;
  line-height: 2.0;
  font-feature-settings: "palt"
}

form {
  width: auto;
  height: 300px;
}

.button {
  font-family: 'Noto Serif JP';
  font-size: 13pt;
  text-align: center;
  cursor: pointer;
  padding: 8px 22px;
  background: #000000;
  color: #ffffff;
  line-height: 1em;
  transition: .3s;
  box-shadow: 1px 1px 3px #666666;
  border: 2px solid #000000;
  display: inline-block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin-top: 150px;
}

.button:hover {
  box-shadow: none;
  color: #000000;
  background: #ffffff;
}

.button2 {
  font-family: 'Noto Serif JP';
  font-size: 13pt;
  text-align: center;
  cursor: pointer;
  padding: 8px 22px;
  background: #000000;
  color: #ffffff;
  line-height: 1em;
  transition: .3s;
  box-shadow: 1px 1px 3px #666666;
  border: 2px solid #000000;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin-top: 200px;
}

.button2:hover {
  box-shadow: none;
  color: #000000;
  background: #ffffff;
}

.button3 {
  font-family: 'Noto Serif JP';
  font-size: 13pt;
  text-align: center;
  cursor: pointer;
  padding: 8px 22px;
  background: #000000;
  color: #ffffff;
  line-height: 1em;
  transition: .3s;
  box-shadow: 1px 1px 3px #666666;
  border: 2px solid #000000;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin-top: 100px;
}

.button3:hover {
  box-shadow: none;
  color: #000000;
  background: #ffffff;
}