/* Introduction Region */

introduction-region {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  height: calc(100vh - 120px);
  padding-bottom: 60px;
}

introduction-region::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  content: '';
  background-size: cover;
}

introduction-region > * {
  position: relative;
}

introduction-region img {
  max-width: 510px;
  width: 100%;
  padding: 0 10px;
  margin-bottom: 40px;
}

introduction-region nav {
  display: flex;
  justify-content: center;
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: #333;
}

introduction-region nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 60px;
  padding: 0 20px;
  text-align: center;
  font-size: 12px;
}

introduction-region nav a + a {
  border-left: 1px solid #000;
}

@media (min-width: 850px) and (min-height: 785px) {

  introduction-region {
    height: calc(100vh - 60px);
    padding-bottom: 0;
  }

  introduction-region nav {
    position: relative;
    width: auto;
    margin-top: 40px;
    background-color: transparent;
  }

  introduction-region nav a {
    height: auto;
    padding: 10px 20px;
    font-size: 14px;
  }

  introduction-region nav a + a {
    border-left: 1px solid #888;
  }

}