SwiperJS Lazy Load Images

<!DOCTYPE html>
<html>
  <head>
    <title>SWIPERJS | par NGLESSON</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="keyword" content="SWIPERJS">
    <meta name="author" content="Mezgani said">
    <meta name="copyright" content="NGLESSON">
    <link href="" rel="stylesheet" type="text/css">
	  <link rel="stylesheet" href="https://unpkg.com/swiper/swiper-bundle.min.css">    
    <link href="style.css"  rel="stylesheet" type="text/css">
</head>
<body>
  <!-- Swiper -->
  <div class="swiper-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide">
        <!-- Required swiper-lazy class and image source specified in data-src attribute -->
        <img data-src="https://source.unsplash.com/random/" class="swiper-lazy">
        <!-- Preloader image -->
        <div class="swiper-lazy-preloader swiper-lazy-preloader-white"></div>
      </div>
      <div class="swiper-slide">
        <img data-src="https://source.unsplash.com/random/" class="swiper-lazy">
        <div class="swiper-lazy-preloader swiper-lazy-preloader-white"></div>
      </div>
      <div class="swiper-slide">
        <img data-src="https://source.unsplash.com/random/" class="swiper-lazy">
        <div class="swiper-lazy-preloader swiper-lazy-preloader-white"></div>
      </div>
      <div class="swiper-slide">
        <img data-src="https://source.unsplash.com/random/" class="swiper-lazy">
        <div class="swiper-lazy-preloader swiper-lazy-preloader-white"></div>
      </div>
      <div class="swiper-slide">
        <img data-src="https://source.unsplash.com/random/" class="swiper-lazy">
        <div class="swiper-lazy-preloader swiper-lazy-preloader-white"></div>
      </div>
      <div class="swiper-slide">
        <img data-src="https://source.unsplash.com/random/" class="swiper-lazy">
        <div class="swiper-lazy-preloader swiper-lazy-preloader-white"></div>
      </div>

    </div>
    <!-- Add Pagination -->
    <div class="swiper-pagination swiper-pagination-white"></div>
    <!-- Navigation -->
    <div class="swiper-button-next swiper-button-white"></div>
    <div class="swiper-button-prev swiper-button-white"></div>
  </div>
  <script src="https://unpkg.com/swiper/swiper-bundle.min.js"></script> 
  <script type="text/javascript" src="script.js"></script>
</body>
</html>
html,
body {
  position: relative;
  height: 100%;
}

body {
  background: #000;
  font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: #000;
  margin: 0;
  padding: 0;
}

.swiper-container {
  width: 100%;
  height: 100%;
}

.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #000;

}

.swiper-slide img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  -ms-transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  position: absolute;
  left: 50%;
  top: 50%;
}
var swiper = new Swiper('.swiper-container', {
    lazy: true,
    pagination: {
      el: '.swiper-pagination',
      clickable: true,
    },
    navigation: {
      nextEl: '.swiper-button-next',
      prevEl: '.swiper-button-prev',
    },
});
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