modal popup with embedded youtube video

_webinar.scss

@keyframes pulse {
    0% {
      -webkit-box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.1), 0 0 0 10px rgba(255, 255, 255, 0.1), 0 0 0 20px rgba(255, 255, 255, 0.1);
      box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.1), 0 0 0 10px rgba(255, 255, 255, 0.1), 0 0 0 20px rgba(255, 255, 255, 0.1); }
    100% {
      -webkit-box-shadow: 0 0 0 10px rgba(255, 255, 255, 0.1), 0 0 0 20px rgba(255, 255, 255, 0.1), 0 0 0 100px rgba(255, 255, 255, 0);
      box-shadow: 0 0 0 10px rgba(255, 255, 255, 0.1), 0 0 0 20px rgba(255, 255, 255, 0.1), 0 0 0 100px rgba(255, 255, 255, 0); }
}

@keyframes appearModalClose {
    0% {
        top: -10%;
        transform: scale(0.5);
    }
    100% {
        top: 10%;
        transform: scale(1);
    }
}
  
  /* .vedio-btn i {
    color: #000cca;
  } */
  
  .close-btn {
    position: absolute;
    top: 14%;
    right: 20%;
    padding: 10px;
    background: transparent;
    border: 0;
    font-size: 20px;
    color: #bebbbb;
    cursor: pointer;
  }
  
  .modal-container {
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
  
  .modal-container.show-modal {
    display: block;
    z-index: 999;
  }
  
  .modal {
    background-color: transparent;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    position: absolute;
    overflow: hidden;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
    animation-name: modalopen;
    animation-duration: 1s;
    z-index: 9999;
  }

button#close{
    position: absolute;
    display: fixed;
    width: 40px;
    height: 40px;
    top: 10%;
    border-radius: 50%;
    right: 20%;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    animation: appearModalClose 0.5s ease-in-out;

    &:hover {
        top: 9.5%;
        transition: all 0.3s ease-in-out;
    }

    span {
        display: block;
        position: relative;
        height: 3px;
        width: 100%;
        background-color: #000;
        transition: transform .3s;
    }

    span:nth-child(1) {
        transform: rotate(45deg);
        top: 2px;
    }

    span:nth-child(2) {
        transform: rotate(-45deg);
        bottom: 1px;
    }
}

@media screen and (max-width: 440px) {
    #modal iframe{
        width: 350px;
    }
}

@media screen and (max-width: 840px) {
    #modal iframe{
        width: 440px;
    }
}

app.js

function pageReady(fn) {
    if (document.readyState != 'loading') {
        fn()
    } else {
        document.addEventListener('DOMContentLoaded', fn)
    }
}

function initWebinarsPopups() {
    const webinarBtn = document.querySelector('.webinar-button')

    if (!webinarBtn) return

    const allWebinarBtns = document.querySelectorAll('.webinar-button')
    const modal = document.getElementById('modal')
    const close = modal.querySelector('#close')

    allWebinarBtns.forEach((btn) => {
        btn.addEventListener('click', function (e) {
            e.preventDefault()

            const videoUrl = btn.dataset.videoUrl
            modal.querySelector('iframe').src = videoUrl

            modal.classList.add('show-modal')
        })
    })

    // Hide modal
    close.addEventListener('click', () => {
        modal.classList.remove('show-modal')
        modal.querySelector('iframe').src = ''
    })

    // Hide modal on outside click
    window.addEventListener('click', (e) => {
        if (e.target == modal) {
            modal.classList.remove('show-modal')
            modal.querySelector('iframe').src = ''
        } else {
            return false
        }
    })
}

pageReady(function () {
    initWebinarsPopups()
})

single.html

{{with $featuredwebinars}}
<div class="blog-features">
  {{range .}}
    {{ $lastMod := .Lastmod }}
    {{ $date := .Date }}
    <a href="{{.RelPermalink}}" class="blog-card blog-feature-card">
      <div class="blog-card-image">
      {{with .Params.thumbnail}}
        <img src="{{. | relURL}}" alt="" />
      {{end}}
      </div>
      <div class="blog-card-content">
        <h3 class="blog-card-title">{{.Title}}</h3>
        <div class="flex fl-jc-between fl-ai-center blog-card-footer">
          <div class="bold blog-card-date">
            <span class="title-red-grad">
            {{$lastMod.Format "Jan 2, 2006"}}
            </span>
          </div>
          {{with .Params.Tags}}
            <span class="bold blog-card-tag">{{index . 0}}</span>
          {{end}}
        </div>
      </div>
    </a>
  {{end}}
</div>
{{end}}

<section>
  <div class="blog-wrap">
  {{with $webinars}}
    <!-- <h2 class="blog-part-title"><span class="title-blue-grad">More articles:</span></h2> -->
    <div class="blog-cards">
    {{range sort .Pages ".Lastmod" "desc"}}
    <a href="#" class="blog-card webinar-button" data-video-url="{{.Params.video_url}}">
      <div class="blog-card-image">
      {{with .Params.thumbnail}}
        <img src="{{. | relURL}}" alt="" />
      {{end}}
      </div>
      <div class="blog-card-content">
        <h3 class="blog-card-title">{{.Title}}</h3>
        <div class="flex fl-jc-between fl-ai-center blog-card-footer">
          {{with .Lastmod}}
          <div class="bold blog-card-date"><span class="title-red-grad">{{.Format "Jan 2, 2006"}}</span></div>
          {{end}}
          {{with .Params.Tags}}
            <span class="bold blog-card-tag">{{index . 0}}</span>
          {{end}}
        </div>
      </div>
    </a>
    {{end}}
    <div class="modal-container" id="modal">
      <button class="" id="close">
        <span></span>
        <span></span>
      </button>
      <div class="modal">
        <iframe width="800" height="400" frameborder="0" allowfullscreen="" src="//">
        </iframe>
      </div>
    </div>
    </div>
  {{end}}
  </div>
</section>