<div class="section">
  <div class="container container_01 lazyload">
    <p>美しい山の景色</p>
  </div>
  <div class="container container_02 lazyload">
    <p>森の中にある、静かな湖</p>
  </div>
  <div class="container container_03 lazyload">
    <p>自転車を止めてお買い物へ</p>
  </div>
  <div class="container container_04 lazyload">
    <p>空から見た夜の街の景色</p>
  </div>
  <div class="container container_05 lazyload">
    <p>さむそうな岩山</p>
  </div>
  <div class="container container_06 lazyload">
    <p>列車が到着した駅のホーム</p>
  </div>
  <div class="container container_07 lazyload">
    <p>きれいな青空の町並み</p>
  </div>
  <div class="container container_08 lazyload">
    <p>朝方の湖の様子</p>
  </div>
  <div class="container container_09 lazyload">
    <p>ビルと空</p>
  </div>
</div>
html,
body {
  margin: 0;
  padding: 0;
}

* {
  box-sizing: border-box;
}
.section {
  max-width: 1240px;
  height: 200vh;
  margin: 0 auto;
  padding: 20px 20px;
}

p {
  display: block;
  font-size: clamp(0.875rem, 3vw, 2rem);
  background: rgba(255, 255, 255, 0.8);
  padding: 1rem;
  margin: 0;
}

.container {
  margin: 3rem 0;
  padding: 20%;
  text-align: center;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  background-color: silver;
}

.container img {
  width: 100%;
  height: auto;
  vertical-align: top;
}

.container_01.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=10YpX23wkcjRflfloUt7tqLeumpias42N");
}
.container_02.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=172pIgbAQZlAWJ18GFLXM9MoWbbi8XfxU");
}
.container_03.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=10mqA1CfPi8N9_McRCe0bOGR_jUHzPEch");
}
.container_04.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=1EnQP6JWlE02lzrcUi0d5zoMihOsWkruG");
}
.container_05.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=1gxu3jZSNU719vxtVA4KV3zhnUO4QR4ve");
}
.container_06.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=1bW4fKXZFM_wPHSSf6EewRYX-hV5iNhvu");
}
.container_07.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=1T0HWZM16tQRdHcA6Vspor7wa7K9Zh8cQ");
}
.container_08.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=1WRQVpgmW1s5YrzB0iQrMYfbU4MvNiyvH");
}
.container_09.lazyloaded {
  background-image: url("https://drive.google.com/uc?export=view&id=15UqOXsvuKpLX6a9K9-tW8TLqgotz0I6d");
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/lazysizes/5.2.0/lazysizes.min.js
  2. https://cdnjs.cloudflare.com/ajax/libs/lazysizes/5.2.0/plugins/unveilhooks/ls.unveilhooks.min.js