.banner {
  position: relative;
  width: 100%;
  top: 100%;
  z-index: 5;
  filter: drop-shadow(0 0 0.25rem rgba(0, 0, 0, 0.9));
}
.banner picture {
  display: flex;
  justify-content: center;
  width: 100%;
  margin: 0;
}
@media screen and (min-width: 1920px) {
  .banner img {
    width: 100%;
  }
}

@media screen and (max-width: 914px) {
  #kowai_title {
    font-size: 1.1rem;
  }
}
@media screen and (max-width: 768px) {
  #kowai_title {
    font-size: 0.9rem;
  }
}
@media screen and (max-width: 671px) {
  #kowai_title {
    font-size: 0.5rem;
  }
}

@media screen and (max-width: 671px) {
  #kowai_price {
    font-size: 0.7rem;
  }
}

.top_visual {
  position: relative;
  margin-top: -28px;
  height: 1259px;
}
@media screen and (max-width: 671px) {
  .top_visual {
    height: auto;
  }
}
@media screen and (min-width: 1920px) {
  .top_visual .hullHDblacks {
    position: absolute;
    display: flex;
    height: 1078px;
    width: 100%;
    justify-content: center;
  }
  .top_visual .hullHDblacks .back {
    position: absolute;
    background-color: black;
    height: 100%;
    width: 100%;
  }
  .top_visual .hullHDblacks #right {
    margin-left: calc(100% + 1920px);
  }
  .top_visual .hullHDblacks #left {
    margin-right: calc(100% + 1920px);
  }
}

.top_visual picture {
  position: absolute;
  z-index: 1;
  left: 50%;
  margin-left: -960px;
}
@media screen and (max-width: 671px) {
  .top_visual picture {
    width: 100%;
    height: auto;
    left: 0;
    right: 0;
    margin: 0 auto;
    flex: 1;
  }
  .top_visual picture img {
    width: 100%;
  }
}

#top_text {
  display: flex;
  left: 0;
  right: 0;
  top: 650px;
  margin: 0 auto;
  max-width: 1083px;
  width: 95%;
  flex-direction: column;
  opacity: 0;
}
#top_text.show {
  animation: zoomPopup 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
@media screen and (max-width: 671px) {
  #top_text {
    top: 345px;
  }
}

.top_visual picture:nth-child(2) {
  z-index: 2;
}

.top_visual picture:nth-child(3) {
  z-index: 3;
}

.top_visual picture:nth-child(4) {
  z-index: 4;
}

.top_visual picture:nth-child(5) {
  z-index: 5;
}

#topback2 {
  position: relative;
  transform: translateY(3rem);
  opacity: 0;
  transition: transform 0.4s ease-out, opacity 0.2s ease-in;
}
#topback2.show {
  transform: translateY(0);
  opacity: 1;
}

@keyframes zoomPopup {
  0% {
    transform: translateY(40px) scale(0.8);
    opacity: 0;
  }
  75% {
    transform: translateY(0) scale(1.2);
    opacity: 1;
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}