<div class="section">

  <div class="container">
    <iframe width="560" height="315" class="lazyload" data-src="https://www.youtube.com/embed/w0x64rhAADs" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>
    </iframe>
  </div>

  <div class="container">
    <iframe data-src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d5149.9577775442385!2d139.76382190481343!3d35.67828411077654!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x60188bfbd89f700b%3A0x277c49ba34ed38!2z5p2x5Lqs6aeF!5e0!3m2!1sja!2sjp!4v1663173552338!5m2!1sja!2sjp" width="600" height="450" class="lazyload" style="border:0;" allowfullscreen="" referrerpolicy="no-referrer-when-downgrade">
    </iframe>
  </div>

  <div class="container">
    <iframe width="560" height="315" class="lazyload" data-src="https://www.youtube.com/embed/8VZjm7gj6Zg" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen>
    </iframe>
  </div>

  <div class="container">
    <iframe data-src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d13482.885887520208!2d135.48718381889645!3d34.69620919899504!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x6000e68d95e3a70b%3A0x1baec822e859c84a!2z5aSn6Ziq6aeF!5e0!3m2!1sja!2sjp!4v1663173847839!5m2!1sja!2sjp" width="600" height="450" class="lazyload" style="border:0;" allowfullscreen="" referrerpolicy="no-referrer-when-downgrade">
    </iframe>
  </div>

</div>

html,
body {
  margin: 0;
  padding: 0;
}

* {
  box-sizing: border-box;
}

.section {
  width: clamp(300px, 80vw, 800px);
  margin: 0 auto;
  padding: 20px 20px;
  height: 200vh;
}

.container {
  aspect-ratio: 16 / 9;
  margin: 3rem 0;
  text-align: center;
}

.container iframe {
  width: 100%;
  height: 100%;
}