Lightning Pro に組み込まれているライブラリ Swiper を使って、coverflow エフェクトのスライダーを作りました。

Swiper によるスライダー ～ エフェクト coverflow

HTML

Outer ブロックの中に以下の カスタム HTML ブロックを入れている。

<div class="swiper-container-1 loading">
   <div class="swiper-wrapper">

     <div class="swiper-slide" style="background-image:url(https://lightning.hp2.work/wp-content/uploads/2021/07/1-1200.webp)">
       <img src="https://lightning.hp2.work/wp-content/uploads/2021/07/1-1200.webp" class="entity-img">
       <div class="content">
         <p class="title" data-swiper-parallax="-30%" data-swiper-parallax-scale=".7">はたらくわかもの【1】</p>
         <span class="caption" data-swiper-parallax="-20%">Swiper.js のスライダーで Coverflow エフェクトを指定しています。</span>
       </div>
     </div>

     <div class="swiper-slide" style="background-image:url(https://lightning.hp2.work/wp-content/uploads/2021/07/2-1200.webp)">
       <img src="https://lightning.hp2.work/wp-content/uploads/2021/07/2-1200.webp" class="entity-img">
       <div class="content">
         <p class="title" data-swiper-parallax="-30%" data-swiper-parallax-scale=".7">はたらくわかもの【2】</p>
         <span class="caption" data-swiper-parallax="-20%">Swiper.js のスライダーで Coverflow エフェクトを指定しています。</span>
       </div>
     </div>

     <div class="swiper-slide" style="background-image:url(https://lightning.hp2.work/wp-content/uploads/2021/07/3-1200.webp)">
       <img src="https://lightning.hp2.work/wp-content/uploads/2021/07/3-1200.webp" class="entity-img">
       <div class="content">
         <p class="title" data-swiper-parallax="-30%" data-swiper-parallax-scale=".7">はたらくわかもの【3】</p>
         <span class="caption" data-swiper-parallax="-20%">Swiper.js のスライダーで Coverflow エフェクトを指定しています。</span>
       </div>
     </div>

   </div>
   <div class="swiper-pagination"></div>
   <div class="swiper-button-prev"></div>
   <div class="swiper-button-next"></div>
</div>

CSS

img{ vertical-align:top; }

.swiper-container-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet::before,
.swiper-container-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet,
[class^=swiper-button-] {
  transition: all 0.3s ease;
}

*, *:before, *:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.swiper-container-1 {
  width: 100%;
  height: 28vw;
  transition: opacity 0.6s ease;
}
.swiper-container-1.swiper-container-coverflow {
  padding-top: 1vh;
  padding-bottom: 1vh;
}
.swiper-container-1.loading {
  opacity: 0;
  visibility: hidden;
}
.swiper-container-1:hover .swiper-button-prev,
.swiper-container-1:hover .swiper-button-next {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
  color: #fff;
}
.swiper-slide {
  background-position: center;
  background-size: cover;
}
.swiper-slide .entity-img {
  display: none;
}
.swiper-slide .content {
  position: absolute;
  top: 40%;
  left: 0;
  width: 70%;
  padding-left: 5%;
  color: #fff;
}
.swiper-slide .content .title {
  font-size: 2.0em;
  font-weight: bold;
  margin-bottom: 30px;
  text-shadow: 2px 2px 1px #000;
}
.swiper-slide .content .caption {
  display: block;
  font-size: 14px;
  line-height: 1.4;
  text-shadow: 1px 1px 1px #000;
}

[class^=swiper-button-] {
  width: 44px;
  opacity: 0;
  visibility: hidden;
}

.swiper-button-prev {
  transform: translateX(50px);
}

.swiper-button-next {
  transform: translateX(-50px);
}
.swiper-container-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet {
  margin: 0 9px;
  position: relative;
  width: 12px;
  height: 12px;
  background-color: #fff;
  opacity: 0.4;
}
.swiper-container-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  transform: translate(-50%, -50%);
  border: 0px solid #fff;
  border-radius: 50%;
}
.swiper-container-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet:hover, .swiper-container-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet.swiper-pagination-bullet-active {
  opacity: 1;
}
.swiper-container-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet.swiper-pagination-bullet-active::before {
  border-width: 1px;
}
@media (max-width: 1180px) {
  .swiper-slide .content {
  width: 100%;
  top: 20%;
  }
  .swiper-slide .content .title {
    font-size: 25px;
  }
  .swiper-slide .content .caption {
    font-size: 12px;
  }
}
@media (max-width: 1023px) {
  .swiper-container-1 {
    height: 40vw;
  }
  .swiper-container-1.swiper-container-coverflow {
    padding-top: 0;
    padding-bottom: 0;
  }
}

JavaScript

var sliderSelector = '.swiper-container-1',
    options = {
      init: false,
      loop: true,
      autoplay: {
        delay: 4000,
      },
      speed:800,
      slidesPerView: 1,
      breakpoints: {
        1023: {
          slidesPerView: 2,
          spaceBetween: 0
        }
      },
      centeredSlides : true,
      effect: 'coverflow',
      coverflowEffect: {
        rotate: 50,
        stretch: 0,
        depth: 100,
        modifier: 1,
        slideShadows : true,
      },
      grabCursor: true,
      parallax: true,
      pagination: {
        el: '.swiper-pagination',
        clickable: true,
      },
      navigation: {
        nextEl: '.swiper-button-next',
        prevEl: '.swiper-button-prev',
      },
      // 画像を読み込んでから表示する
      on: {
        imagesReady: function(){
          this.el.classList.remove('loading');
        }
      }
    };
var mySwiper = new Swiper(sliderSelector, options);

// Initialize slider
mySwiper.init();

参考にしたサイト

CodePen https://codepen.io/digistate/pen/KZWYwo

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