header.utaibako_header {
    padding-top: 10.5rem;
    padding-bottom: 3rem;
    text-align: center;
    color: #fff;
    background-image: url("../assets/img/header-bg.jpg");
    background-repeat: no-repeat;
    background-attachment: scroll;
    background-position: center center;
    background-size: cover;
  }
  header.utaibako_header .masthead-subheading {
    font-size: 1.5rem;
    font-style: italic;
    line-height: 1.5rem;
    margin-bottom: 25px;
    font-family: "Noto Serif JP", serif;
    font-optical-sizing: auto;
  }
  header.utaibako_header .masthead-heading {
    font-size: 2rem;
    font-weight: 700;
    line-height: 2.5rem;
    margin-bottom: 2.5rem;
    font-family: "Noto Serif JP", serif;
    font-optical-sizing: auto;
  }
  
  @media (min-width: 768px) {
    header.utaibako_header {
      padding-top: 17rem;
      padding-bottom: 12.5rem;
    }
    header.masthutaibako_headeread .masthead-subheading {
      font-size: 2.25rem;
      font-style: italic;
      line-height: 2.25rem;
      margin-bottom: 2rem;
    }
    header.utaibako_header .masthead-heading {
      font-size: 2.75rem;
      font-weight: 700;
      line-height: 2.5rem;
      margin-bottom: 4rem;
    }
  }