/* below 1200px */
@media (max-width: 75em) {
  html {
    font-size: 56.25%;
  }
  .main-container {
    letter-spacing: 1.2;
    line-height: 1.6;
  }
  .section-hero {
    background-image: url(images/bg-hero-lg.jpg);
  }
  .hero-title-img {
    width: 44rem;
  }
  .promotion {
    grid-template-columns: 2fr 1fr;
  }
  .promotion-date-img {
    width: 31rem;
  }
  .dot-img {
    width: 5rem;
  }
  .promotion-pic-img {
    width: 100%;
  }
  .navi-cata-img {
    width: 26rem;
  }
  .navi-content-title-img,
  .navi-content-polaroid-title-img,
  .navi-book-content-title-img {
    width: 28rem;
  }
  .book-img {
    height: 30rem;
  }
  .polaroid-img {
    width: 30rem;
  }
  .section-navi-book-top {
    background-image: url(images/bg-navi-book-top-lg.jpg);
  }
  iframe {
    width: 100%;
    height: 208rem;
  }
  .book-cata-more-img {
    width: 19rem;
  }
  .book-cata-pic-img {
    width: 50rem;
  }
  .lace-img {
    width: 48rem;
  }
}

/* below 944px */
@media (max-width: 59em) {
  html {
    font-size: 50%;
  }
  .navi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .navi-cata-img {
    width: 30rem;
  }
}

/* below 825px */
@media (max-width: 52em) {
  .section-hero {
    background-image: url(images/bg-hero-lg2.jpg);
  }
  .polaroid-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .polaroid-span-2 {
    grid-column: span 2;
  }
  .book-cata-grid {
    grid-template-columns: 1fr;
  }
  .span-2 {
    grid-column: auto;
  }
  .book-set-grid-4 {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 5.2rem;
  }
  .lace-long {
    display: none;
  }
  .lace-short {
    display: block;
  }
}

/* below 704px */
@media (max-width: 44em) {
  .main-container {
    padding-left: 2.4rem;
    padding-right: 2.4rem;
  }
  .section-hero {
    background-image: url(images/bg-hero-sm.jpg);
    padding-bottom: 50rem;
    padding-top: 2rem;
  }
  .hero-title-img {
    display: none;
  }
  .hero-title-sm-img {
    display: block;
    width: 100%;
  }
  .promotion {
    grid-template-columns: 1fr;
    justify-content: center;
  }
  .promotion-text {
    max-width: 70rem;
    margin-right: 4.6rem;
  }
  .promotion-pic {
    display: none;
  }
  .navi-box {
    margin-bottom: 3.2rem;
  }
  .padding-bottom {
    padding-bottom: 0;
  }
  .navi-content-box {
    padding: 5.2rem 6.4rem 6.4rem 6.4rem;
  }
  .navi-content-title-img,
  .navi-content-polaroid-title-img,
  .navi-book-content-title-img {
    width: 26rem;
  }
  .navi-content-author-grid {
    grid-template-columns: 1fr;
    gap: 2.4rem;
  }
  .navi-content-intro-img {
    width: 36rem;
  }
  .navi-content-author-name-flex {
    justify-content: center;
  }
  .navi-content-author-name {
    justify-self: center;
  }
  .kissa-shuna-text-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .kissa-shuna-books-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .navi-content-more-img {
    width: 19rem;
  }
  .editors-pick-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    row-gap: 3.2rem;
  }
  .book-select-span-2 {
    grid-column: span 2;
  }
  .book-img {
    height: 27rem;
  }
  .section-navi-book-top {
    background-image: url(images/bg-navi-book-top-md.jpg);
    height: 40rem;
  }
  iframe {
    width: 100%;
    height: 313rem;
  }
  .padding-bottom-lg {
    padding-bottom: 70rem;
  }
  .padding-bottom-lg2 {
    padding-bottom: 80rem;
  }
}

/* below 544px */
@media (max-width: 34em) {
  .navi-content {
    padding-top: 3.2rem;
  }
  .section-hero {
    padding-bottom: 30rem;
  }
  .promotion-text {
    margin-left: 0;
    margin-right: 0;
    margin-top: 10rem;
    padding: 2.2rem;
    padding-top: 3.2rem;
  }
  .promotion-flex {
    display: flex;
    align-items: start;
    column-gap: 1.5rem;
    text-align: left;
  }
  .dot-img {
    width: 4.8rem;
  }
  .navi-cata-img {
    width: 22rem;
  }
  .navi-content-box {
    padding: 3.2rem 3.2rem 6.4rem 3.2rem;
  }
  .navi-content-title-img,
  .navi-content-polaroid-title-img,
  .navi-book-content-title-img {
    width: 23rem;
  }
  .navi-content-intro-img {
    width: 33rem;
  }
  .navi-content-author-thumbnail-img {
    width: 16rem;
  }
  .kissa-shuna-books-grid {
    grid-template-columns: 1fr;
  }
  .polaroid-grid {
    gap: 3.2rem;
  }
  .polaroid {
    display: none;
  }
  .polaroid-sm {
    display: block;
  }
  .polaroid-img {
    width: 18rem;
  }
  .section-navi-book-top {
    background-image: url(images/bg-navi-book-top-sm.jpg);
    height: 28rem;
  }
  .navi-book-contnet-title {
    padding-top: 4rem;
  }
  .book-horizontal-img {
    height: 24rem;
  }
  .lace-img {
    width: 44rem;
  }
  .book-cata-pic-img {
    width: 44rem;
  }
  .book-cata-more-img {
    width: 18rem;
  }
  .padding-bottom-lg {
    padding-bottom: 60rem;
  }
  .padding-bottom-lg2 {
    padding-bottom: 60rem;
  }
}