html, body {
  font-family: noto-sans-cjk-jp, sans-serif;
  font-weight: normal;
}

.page-header {
  margin-top: 110px;
  padding: 80px 0;
  text-align: center;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: #850000;
  opacity: .7;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  color: #fff;
  font-weight: 800;
  letter-spacing: 4px;
}

.main-column {
  padding: 80px 0;
}

@media screen and (max-width: 480px) {
  .page-header {
    margin-top: 90px;
    padding: 60px 0;
  }
}