.tunnel {
  background-color: #ffd1dc;
  background-image: linear-gradient(#ffd1dc, #000000);
  height: 1010px;
  max-width: 100%;
  border-bottom: 5px solid #000;
  border-top: 5px solid #ffd1dc;
}
.tunnel-reverse {
  background-color: #000;
  background-image: linear-gradient(#000, #ffd1dc);
  height: 1010px;
  max-width: 100%;
  border-top: 5px solid #000;
  border-bottom: 5px solid #ffd1dc;
}
.inside{
  background-color:#000000;
  color: #ffd1dc;
  max-width: 100%;
  border-top: 10px solid #000;
  border-bottom: 10px solid #000;
}
.outside{
  background-color: #ffd1dc;
  color:#000;
  max-width: 100%;
}
.text{
  margin: 0% 15% 0% 15%;
  font-size: 18px;
  line-height: 1.4;
}
.text-inside{
  margin: 0% 20% 0% 20%;
  font-size: 18px;
  line-height: 1.4;
}
body {
  background-color: #ffd1dc;
  font-family: Verdana;
  }
  h1,h2,h3 {
    line-height:1.2;
  }
  .shimeji {
    text-align: center;
  }
  .button {
      margin-left: auto;
      margin-right: auto;
      display: block;
  }
  .center{
      margin-left: auto;
      margin-right: auto;
  }
  .dialog {
    background-color: #ffd1dc;
  }