html body{
  height:100%;
}

@media screen and (min-width:1500px){
.slide-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap:0;
  padding: 2rem;
  padding-bottom: 0;
  height: 1080px;
  background-color: #c5c3c3e8; /* 色を少し薄く変更 */
}

.slide-container h2 {
  font-size: 2.5rem;
  border-bottom: 3px solid #444;
  padding-bottom: 0.5rem;
  margin-bottom: 2rem;
}

.left-blank-content {
  flex: 1;
  margin-bottom: 20rem;
}

.slide-manual h3,
.manual-blank {
  padding-bottom: 1.5rem;
}

.slide-manual h3{
  font-size:xx-large;
}

.slide-manual li{
  font-size:1.4rem;
}

.slide-content {
  flex: 3;
  max-width: 75%;
}

.swiper {
  margin: 0 auto;
  width: 90%;
  height: 80%; 
  box-shadow: none;

}

.swiper-slide {
  line-height: 1rem; /* テキストの縦位置を中央に保つ */
}

.swiper-button-next,
.swiper-button-prev {
  width: 50px; 
  height: 50px;
}

.next-page-container {
  flex: 1; /* 全体の1/4を占める */
  align-items: flex-end;
  justify-content: flex-end;
  margin-top: 40rem;
}

.back-list-button,
#next-page-btn {
  padding: 15px 25px; /* ボタンサイズを拡大 */
  font-size: 18px;
  margin: 1rem;
}

.back-list-button:hover{
  background-color:rgb(0, 179, 255);
  transform: scale(1.05);
}

#next-page-btn:hover {
  background-color:rgb(179, 0, 152);
  transform: scale(1.05);
}


/*動画ページ*/
#video{
    width:90%;
    height:80%;
}

.video-main{
  height:1080px;
  width:100%;
  padding: 1rem;
  padding-top: 7rem;
  background-color: #cfdded;
}

.video-title {
  font-size: xx-large;
  border-bottom: 2px solid #333;
  margin-bottom: 2rem;
}

.video-content {
  flex: 6;
}

.video-memo{
  flex: 1;
}

#toggleButton {
  font-size: 1.7em;
}

#memo {
  width: 120%;
  height: 40rem;
  padding: 1rem;
  font-size: 1.1rem;
}

#saveMemo {
  font-size: 1.7em;
}

/*初めての方へ*/
 .intro-title h2{
  font-size: 2.5em;
 }

 .intro-detail{
  font-size:1.5em;
 }

 .intro-detail-img img{
  width:100%;
  height:56.25%;
 }

 .intro-detail-icon{
  font-size: 3em;
 }

/* サイドバー */
.sidebar {
  width: 20%;
}

.sidebar h3 {
  font-size: x-large;
}

.sidebar ul li a {
  font-size: x-large;
}

/*フッター*/
footer{
  position:sticky;
  top:100vh;
}
}