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JavaScript

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HTML 

              
                  <div class="fixed-body">
   <section>
    <h2>Dog</h2>
     <p>Basking in the breeze, the dog inside the car wears a contented expression as it leans out the window. Ears aflutter, and with its fur ruffling in the wind, it embraces the exhilarating sensation of the open road. A picture of pure joy and freedom.</p>
   </section>
   <div class="fixed-block photo1"></div>
   <section>
    <h2>Watr</h2>
     <p>The tranquil lake stretched as far as the eye could see, its surface glistening under the sun's gentle caress. Crystal-clear droplets cascaded from the waterfall, landing in a cool, inviting pool below. Waves danced and whispered along the shoreline, while rain tapped a soothing rhythm on windowsills. Water, in its various forms, always held a mesmerizing and calming allure.</p>
   </section>
   <div class="fixed-block photo2"></div>
   <section>
    <h2>Tokyo Skytree</h2>
     <p>As the sun bids its farewell, Tokyo's Skytree emerges against the canvas of the evening sky, its silhouette bathed in the warm hues of twilight. The city lights awaken, casting a gentle glow, while the tower stands tall, a sentinel of the night, offering a breathtaking spectacle.</p>
   </section>
   <div class="fixed-block photo3"></div>
   <div class="footer">©yamada3004.</div>
  </div>
!

CSS 

              
                *,
*:before,
*:after {
	margin: 0;
	padding: 0;
 box-sizing: border-box;
}
.fixed-body section {
  background-color: #eeeeee;
  width: 100%;
  height: 50vh;
  padding: 2rem;
  			position: relative;
			overflow: hidden;
			&::after {
				content: '';
				position: absolute;
				top: 0;
				left: 0;
				z-index: 1;
				display: block;
				width: 100%;
				height: 100%;
				transition: 1s;
				background: linear-gradient( to bottom, transparent 0%,#eeeeee 100% );
			}
}
.fixed-body section h2 {
  color: #000;
  font-size: 80px;
  text-transform: uppercase;
  word-wrap:break-word;
}
.fixed-body section p{
	color: #000;
	line-height: 1.8;
	max-width: 70%;
  margin-top: clamp(24px, 3.1vw ,32px);
}
.fixed-body .footer {
  background-color: #eeeeee;
  width: 100%;
  height: 30vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
}
/* ここから画像固定 */
.fixed-block {
  min-height: 35vh;
  position: relative;
  background-position: top center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
}
.fixed-block.photo1 {
  background-image: url(https://css.pieceplus.jp/wp-content/uploads/2023/08/001.jpg);
}
.fixed-block.photo2 {
  background-image: url(https://css.pieceplus.jp/wp-content/uploads/2023/08/002.jpg);
}
.fixed-block.photo3 {
  background-image: url(https://css.pieceplus.jp/wp-content/uploads/2023/08/003.jpg);
}
!

JS
!
999px

Console