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HTML 

              
                <head>
  <meta name="viewport" content="width=device-width,initial-scale=1.0">
  <!--==============レイアウトを制御する独自のCSSを読み込み===============-->
  <link rel="stylesheet" type="text/css" href="https://dl.dropbox.com/s/0z920nydj51coo7/reset3.css?dl=0">
  <!--==============スライダープラグイン「slick」のCSSを読み込み===============-->
  <link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick.css">
</head>

<body>
  <div class="wrapper">

    <div class="slider">
      <h1>Slide show</h1>
      <ul class="slider-top">
        <li><img src="https://assets.codepen.io/6329135/img_01.jpg?height=800&format=auto" alt=""></li>
        <li><img src="https://assets.codepen.io/6329135/img_02.jpg?height=800&format=auto" style="object-position: 0 100%" alt=""></li>
        <li><img src="https://assets.codepen.io/6329135/img_03.jpg?height=800&format=auto" style="object-position: 100% 100%" alt=""></li>
      </ul>
      <ul class="slider-bottom" dir="rtl">
        <!--/スライダの表示方向を左⇒右に変更するためにdir="rtl"を追加-->
        <li><img src="https://assets.codepen.io/6329135/img_04.jpg?height=800&format=auto" alt=""></li>
        <li><img src="https://assets.codepen.io/6329135/img_05.jpg?height=800&format=auto" style="object-position: 0 100%" alt=""></li>
        <li><img src="https://assets.codepen.io/6329135/img_06.jpg?height=800&format=auto" style="object-position: 0 100%" alt=""></li>
      </ul>
      <!--/slider-->
    </div>

    <div class="container">
      <p>ここから次のコンテンツスタート<br>使用したライブラリ：<a href="https://kenwheeler.github.io/slick/" target="_blank">https://kenwheeler.github.io/slick/</a></p>
    </div>

    <!--/wrapper-->
  </div>

  <script src="https://code.jquery.com/jquery-3.4.1.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
  <script src="https://cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick.min.js"></script>
</body>
!

CSS 

              
                @charset "utf-8";

/*==================================================
スライダーのためのcss
===================================*/
.slider {
  position: relative;
  z-index: 1;
  /*↑z-indexの値をh1のz-indexの値よりも小さくして背景に回す*/
  height: 100vh; /*スライダー全体の縦幅を画面の高さいっぱい（100vh）にする*/
}

.slider-top,
.slider-bottom {
  height: 50vh; /*スライダー上下の縦幅を画面の高さの半分（50vh）にする*/
}

/*　背景画像設定　*/
/*  なぜか背景が表示されない
.slider-item01 {
  background: url(https://assets.codepen.io/6329135/img_01.jpg);
}

.slider-item02 {
  background: url(https://assets.codepen.io/6329135/img_02.jpg);
}

.slider-item03 {
  background: url(https://assets.codepen.io/6329135/img_03.jpg);
}

.slider-item04 {
  background: url(https://assets.codepen.io/6329135/img_04.jpg);
}

.slider-item05 {
  background: url(https://assets.codepen.io/6329135/img_05.jpg);
}

.slider-item06 {
  background: url(https://assets.codepen.io/6329135/img_06.jpg);
}
*/
.slider-item img {
  width: 100%; /*各スライダー全体の横幅を画面の高さいっぱい（100%）にする*/
  height: 50vh; /*各スライダーの縦幅を画面の高さの半分（50vh）にする*/
  background-repeat: no-repeat; /*背景画像をリピートしない*/
  background-position: center; /*背景画像の位置を中央に*/
  background-size: cover; /*背景画像が.slider-item全体を覆い表示*/
  object-fit: cover; /*画像の縦横比を保持したまま画像を中央表示*/
}

/*========= レイアウトのためのCSS ===============*/
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: #fff;
}

a:hover,
a:active {
  text-decoration: none;
}

h1 {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  font-size: 6vw;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
}

.container {
  background: #555;
}

.container p {
  padding: 300px 0;
  text-align: center;
  color: #fff;
}
!

JS 

              
                //スライド上の設定
$(".slider-top").slick({
  accessibility: false, // 左右矢印ボタンでの切り替えなし
  arrows: false, //左右矢印ボタン表示なし
  autoplay: true, //自動的に動き出すか。初期値はfalse。
  pauseOnHover: false, //オンマウスでスライドを一時停止させるかどうか。初期値はtrue。
  pauseOnFocus: false, //フォーカスした際にスライドを一時停止させるかどうか。初期値はtrue。
  slidesToShow: 1, //スライドを画面に1枚見せる
  slidesToScroll: 1, //1回のスクロールで1枚の写真を移動して見せる
  swipe: false //タッチスワイプに対応しない
});
//スライド下の設定
$(".slider-bottom").slick({
  accessibility: false, // 左右矢印ボタンでの切り替えなし
  arrows: false, //左右矢印ボタン表示なし
  autoplay: true, //自動的に動き出すか。初期値はfalse。
  pauseOnHover: false, //オンマウスでスライドを一時停止させるかどうか。初期値はtrue。
  pauseOnFocus: false, //フォーカスした際にスライドを一時停止させるかどうか。初期値はtrue。
  slidesToShow: 1, //スライドを画面に1枚見せる
  slidesToScroll: 1, //1回のスクロールで1枚の写真を移動して見せる
  swipe: false, //タッチスワイプに対応しない
  rtl: true //スライダの表示方向を左⇒右に変更する
});
!
999px

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