.material-wrap {
  display: flex;
  flex-direction: column;
  gap: 40px;
  height: auto !important;
}

.product-headline {
  text-align: center;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

.material-background {
  height: 100%;
}

.coming-soon {
  height: inherit;
  padding: 20px;
  background-size: contain;
}

.monochrome {
  position: relative;
  z-index: 0;
}

.monochrome::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: inherit;
  filter: grayscale(100%);
  /* 最背面へ */
  z-index: -1;
}

.sentence-place {
  width: 55%;
  max-width: 55%;
}

/* .sentence-place-ml {
  margin-left: auto;
}

.sentence-place-mr {
  margin-right: auto;
} */

.shadow {
  text-shadow: 0 0 6px #fff;
}

.productization {
  margin-left: 10px;
  color: red;
}

.explanation-box {
  /* background-color: rgba(128, 128, 128, 0.6); */
  background-color: rgba(255, 255, 255, 0.6);
  padding: 20px;
}

.material-background
  .coming-soon
  .sentence-place
  .explanation-box
  .material-link {
  color: #000000;
  border: 1px solid #000000;
}

@media screen and (max-width: 768px) {
  .sentence-place {
    width: 100%;
    max-width: 100%;
  }
}

@media screen and (min-width: 1024px) {
  .material-background {
    height: 400px;
  }
}

@media screen and (min-width: 1440px) {
  .coming-soon {
    background-size: auto;
  }
}

.sentence-place-ml .sentence-place {
  margin-left: auto;
}

.sentence-place-mr .sentence-place {
  margin-right: auto;
}

.sentence-place-ml {
  transform: scale(-1, 1);
}

.sentence-place-ml .coming-soon {
  transform: scale(-1, 1);
}