body {
  background: #151515;
  background-size: cover;
  color: #fff;
  text-align: center;
  font-family: 'Raleway', "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

*, *::before, *::after {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}



.hidden {
  display: none;
}

a {
  text-decoration: none;
  color: #fff;
  text-align: center;
  font-size: 1.4rem;
  line-height: 2em;
  font-family: 'Raleway', "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

.header {
  padding: 170px 30px 80px;
  height: 100vh;
}